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Assessment of potentially toxic elements and health risks of agricultural soil in Southwest Riyadh, Saudi Arabia

  • Abdelbaset S. El-Sorogy EMAIL logo und Mohammed H. Al Khathlan
Veröffentlicht/Copyright: 23. April 2024
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Open Chemistry
Aus der Zeitschrift Open Chemistry Band 22 Heft 1

Abstract

The rise of emerging pollutants in the environment as a result of economic growth poses a worldwide challenge for the management of environmental and human health. The objective of this study was to assess the presence of potentially toxic elements (PTEs) in the agricultural soil of southwest Riyadh, Saudi Arabia, and to evaluate the potential health risks associated with these elements. Soil samples were collected from 31 farms, and the concentrations of As, Pb, Cu, Ni, Zn, and Fe were analyzed using inductively coupled plasma-atomic emission spectrometry. Various contamination and health risk indices, along with multivariate analyses, were employed in the evaluation. The mean concentrations of PTEs (mg/kg) followed the order: Fe (15,556) > Zn (53.36) > Ni (21.78) > Cu (11.92) > Pb (10.42) > As (2.64). The average PTE concentrations were found to be lower than background levels and the world-soil average. Contamination indices indicated that the studied soil was moderately enriched and contaminated for As, slightly enriched for Zn and Ni, and not enriched for Cu and Pb. This suggests that the PTEs in the soil do not pose a significant threat, although some individual samples exhibited significant enrichment for Zn and Pb. Multivariate analyses suggested a geogenic source for the PTEs, with some contribution from anthropogenic factors for As, Zn, and Pb. The average hazard index values ranged from 0.000293 (Zn) to 0.030561 (Fe) for adults and from 0.002726541 (Zn) to 0.284670158 (Fe) for children, indicating no significant non-carcinogenic risk to the population in the study area. Additionally, the Lifetime Cancer Risk values for adults and children ranged from 6.94 × 10−6 to 6.46 × 10−5 for As and from 7.13 × 10−8 to 6.65 × 10−7 for Pb, suggesting acceptable or tolerable carcinogenic risk and no significant health hazards.

Keywords: potentially toxic elements; health risk assessment; principal component analysis; agriculture soil; Saudi Arabia

1 Introduction

Potentially toxic elements (PTEs) encompass a group of chemical elements that, even in trace amounts, can pose significant risks to human health and the environment. These elements include As, Pb, Cd, Hg, and Cr, among others [1,2,3]. Cd, Hg, Pb, and Cr, in particular, demonstrate harmful effects, even in minimal quantities, leading to acute and chronic toxicities in the body [4]. Natural sources of PTEs include the geochemical background in rocks, volcanic eruptions, and windblown mineral dust [5]. Anthropogenic sources of PTEs, on the other hand, encompass airborne sources, coal ash, metals from mining, waste disposal, pesticides, inorganic fertilizers, lead-based paints, petrochemicals, and leaded gasoline, with particular significance [6,7,8].

Humans can be exposed to PTEs through various means, such as ingesting soil, consuming contaminated water and food crops, inhaling dust and fumes, and direct skin contact with polluted soil and water [9,10]. The toxicity of PTEs is determined by factors like the absorbed dose, exposure route, and duration of exposure [11]. The dissolved forms of PTEs, serving as pollutants in soil, water, and air, enter the food chain and can lead to significant damage to cellular systems, ultimately posing a risk of cancer development. Several PTEs such as Cr, Co, Fe, Ni, Zn, and Mn are known to be nutritionally essential and required in minimal quantities [12,13]. However, overexposure to these elements can be hazardous and lead to various serious illnesses, including kidney disorders, diabetes, irritated and ulcerated skin, neurological abnormalities, cancer, heart disease, and lung fibrosis [14,15]. According to reports from the International Agency for Research on Cancer, nonessential PTEs like As, Cd, and Cr are identified as major contributors to cancer [16]. To address these health risks, it is crucial for regulatory bodies, researchers, and the public to be aware of the dangers associated with PTE exposure. Implementing measures to reduce exposure, monitoring environmental pollution, and promoting safe practices in agriculture and industry are essential steps in minimizing the adverse effects of PTEs on human health.

The growing global demand for food due to population expansion has resulted in a notable increase in the consumption of vegetables cultivated in urban and suburban areas [17]. Research studies have pointed out that vegetables grown in these regions tend to accumulate higher levels of various chemical pollutants compared to those cultivated in rural areas [18]. This increased presence of pollutants is attributed to the mobilization of PTEs into the environment caused by human activities, forming a crucial component of the geochemical cycling of these elements. Monitoring and understanding the levels of PTE pollutants in urban soils are essential for assessing the potential risks to human health associated with the consumption of crops grown in these areas.

Most of the soils in Saudi Arabia are considered immature or young, primarily due to the scarcity of moisture [19]. In central region of Saudi Arabia, including the study area, the soil can be categorized into Torriorthents, Torrifluvents, and Torripsamments [20,21]. Torriorthents are shallow soils consisting of loamy sand, fine sandy loam, sandy loam, loam, or clay loam and typically form in residuum or colluvium on actively eroding slopes and in weathering-resistant materials. Torrifluvents, on the other hand, are stratified Entisols that develop in alluvial sediments from intermittent stream flooding. Torripsamments form on well-sorted sandy deposits found on stream terraces, featuring a torrid moisture regime. The objectives of this research are: (i) to quantify the presence of As, Pb, Cu, Ni, Zn, and Fe contamination in the agricultural soils of southwest Riyadh, Saudi Arabia; (ii) to compare the levels of these PTEs in the study area with those found in soils globally and under different environmental backgrounds; and (iii) to evaluate the potential health risks associated with the presence of PTEs in the examined soil.

2 Material and methods

2.1 Study area

Soil samples presently obtained originated from 31 farms situated in the southwestern region of Riyadh, central Saudi Arabia. The sampling encompassed areas such as Al Hariq, Al Mufayger, Naam, and Hawtat Bani Tamim, spanning coordinates between 23°26′11″N–23°37′51″N and 46°46′34″E–46°30′23″E (Figure 1). The examined farms feature diverse crops, including date trees (S1, S2, S5, S9, S15, S17–S19, S21, S23, S24, S26, S28, S29, S31), citrus (S3, S7, S8, S12, S16, S20, S22, S25, S30), rose (S4), clover (S6, S14), maize (S10), sidr (S11), fig (S13), and banana (S27). Groundwater irrigates 28 farms (S3–S20 and S22–S31), while treated water is used for irrigation in three farms (S1, S2, and S21). Geologically, the study area falls within the Arabian shelf, primarily composed of Triassic to Quaternary sedimentary rocks and sediments. These sedimentary facies have undergone extensive previous scrutiny in various studies [22,23,24,25,26,27,28,29,30].

Figure 1 Location map of the study areas and sampling sites.
Figure 1

Location map of the study areas and sampling sites.

2.2 Sampling and analytical methods

Materials were gathered from depths of less than 30 cm using a sturdy plastic hand shovel. A representative sample was generated by blending three subsamples to form a composite sample, which was then placed in plastic bags and stored in an icebox. The soil samples underwent air-drying in the laboratory at room temperature for 6 days, with the subsequent removal of large pebbles and organic particles. Physical breakdown was executed using an agate mortar and pestle, followed by size separation utilizing a series of sieves. The resultant mixture was consolidated, diluted to a volume of 12.5 mL with deionized water, and subsequently subjected to analysis.

The analysis of Fe, As, Ni, Zn, Pb, and Cu was carried out using inductively coupled plasma-atomic emission spectrometry (ICP-AES) at the ALS Geochemistry Lab in Jeddah, Saudi Arabia. A 0.50 g portion of the <63 μm fraction underwent digestion with aqua regia (a mixture composed of one mole of nitric acid and three moles of hydrochloric acid) for 45 min, in a graphite heating block. After cooling, the resulting solution is diluted to 12.5 mL with deionized water. For background and certification assessment, the ALS Geochemistry Laboratory employed a standard analytical batch that included a reagent blank. The validation of the ICP-AES method included assessing linearity, limits of detection, limits of quantification, accuracy, and precision. Calibration curves were constructed for each element by plotting the peak area of the optimum emission line against the concentration of standard solutions or spike solutions for standard addition curves. These calibration curves demonstrated excellent linearity across all elements. The relative standard deviations (%) for all metal(loids) were found to be below 13.5%, indicating satisfactory precision [31]. Moreover, the relative recovery values (R%) fell within the range of 80–120%, confirming the accuracy of the method.

The evaluation of soil samples for PTEs included the application of both single and integrated indices. These indices comprised the enrichment factor (EF), geo-accumulation index (I geo), contamination factor (CF), pollution load index (PLI), and risk index (RI), following the methodologies established by [32,33,34,35]. Equations (1)–(6) and Table S1 illustrate the calculation methods and classification of the contamination indices.

(1) EF = ( M / Fe ) sample / ( M / Fe ) background ,

(2) I geo = Log 2 ( Cn / ( 1.5 × Bn ) ) ,

(3) CF = C o / C b ,

(4) PLI  = ( CF 1 × CF 2 ×  CF 3 ×  CF 4 … . ×  CF n ) 1 / n ,

(5) Er i = Tr i ×  CF i ,

(6) RI  = ∑ ( Tr i ×  CF i ) ,

where (M/Fe) sample represents the ratio of metal to Fe concentrations in the sample, while (M/Fe) background signifies the ratio of metal to Fe concentrations in the Earth’s crust. Cn denotes the measured concentration of metal (n) in the soils, Bn indicates the geochemical background concentration of the metal (n) in shale, and 1.5 is introduced to mitigate the effects of potential variations in the background values. Co stands for the soil metal content in the sample, and Cb represents the normal background value of the metal. CF denotes the contamination factor, Er i indicates the potential ecological risk factor of an individual element, Tr i represents the biological toxic response factor of an individual element, and CF i represents the contamination factor for each single element. The toxic response factor for metals follows the order: Zn = 1, Ni = 6, Cu = Pb = 5, and As = 10.

Additionally, human health assessments were conducted using the hazard index (HI), cancer risk (CR), and total lifetime cancer risk (LCR), accounting for ingestion, dermal contact, and inhalation pathways, for both adults and children, as per guidelines provided in previous literature [36,37,38,39]. Equations (7)–(13) and Tables S2 and S3 demonstrate the health risk indices and parameters utilized in this study [36,40,41,42].

(7) CDI ing = ( C soil ×  Ing R × EF ×  ED ) / ( BW ×  AT ) ×  CF ,

(8) CDI inh = ( C soil × InhR × EF×ED ) / ( PEF × BW × AT ) ,

(9) CDI derm    = ( C soil × SA × AFsoil × ABS × EF × ED) / (BW × AT) × CF ,

(10) HQ  = CDI/RfD,

(11) HI  =  ΣHQ  =  HQ ing   +  HQ derm +  HQ inh ,

(12) Cancer risk = CDI  ×  CSF,

(13) LCR  =   ∑ Cancer risk = Cancer risk ing   +  Cancer risk derm   +  Cancer risk inh .

Table S3 does not include a chronic daily intake (CDI) value for Fe because of the lack of RfDinh and RfDderm values for Fe. This absence may stem from discrepancies among published data or unreliable traceability to the original study for the reference value [40]. Additionally, the impact of Pb on humans through dermal contact is uncertain, which is why CSF values for dermal contact of Pb were scarcely mentioned.

3 Results and discussion

3.1 Concentration and distribution of PTEs

The soil concentrations of PTEs in dry weight (mg/kg) are documented in Table S4. The average values are as follows: Fe (15,555), Zn (53.36), Ni (21.78), Cu (11.92), Pb (10.42), and As (2.64). Table 1 shows that the average values of the tested PTEs were lower than those reported from Mashhad city, located in the northeast of Iran [43], the Gangetic plain in India [3], background levels, and the world-soil average [44,45]. For instance, Pb, Ni, Cu, and Zn exceeded in Mashhad city, northeast Iran by 11-, 8-, 7-, and 3-folds compared to the present averages. Moreover, the As, Pb, and Cu average values were lower than those reported from Frydek-Mistek district, Czech Republic [46] and Shandong Province, North China [47]. Notably, the average concentrations of Fe, Cu, and Pb in this study were found to be higher than those reported in the soils of Al-Ammariah and Al-Ahsa in Saudi Arabia [48,49]. In contrast, the values for Fe, Zn, As, and Pb were lower than the average concentrations reported for soils in Wadi Jazan and Al Uyaynah in Saudi Arabia [50,51].

Table 1

Comparison between average PTEs concentration in the study area and other local and world backgrounds

Location and references Fe Ni Zn Cu As Pb
Southwest Riyadh, Saudi Arabia (present study) 15,556 27.82 63.85 12.70 3.64 6.12
Gangetic plain, India [3] 49,297 26.3 188.0 46.1 5.8 32.8
Mashhad city, NE of Iran [43] — 167.76 166.5 83.08 4.66 112.13
Background value [44] 47,200 68.0 95.0 45.0 13.0 20.0
World-soil average [45] 35,000 29.0 70.0 38.9 6.83 27.0
Frydek-Mistek district, Czech Republic [46] 16.15 85.22 22.54 5.32 33.86
Shandong Province, North China [47] 25.04 51.68 19.4 6.4 25.65
Al-Ammariah soil, northwest Riyadh, Saudi Arabia [48] 11,526 26.94 52.16 11.36 3.78 5.08
Al-Ahsa, Eastern Saudi Arabia [49] 11,891 14.53 54.43 10.83 2.27 5.23
Wadi Jazan, Saudi Arabia [50] 23,811 48.66 75.80 72.85 14.13 19.41
Al Uyaynah soil, Saudi Arabia [51] 35,667 19.25 64.33 10.56 13.8 28.48

The Q-mode hierarchical cluster analysis (HCA) classified the 31 sampled sites into two groups according to the PTE levels (Figure 2). The first group, comprising S1, S6, S7, S8, S11, S12, S16, S19, S20, S22, S24–S27, and S29, exhibited the highest concentrations of As, Cu, Fe, Pb, Ni, and Zn (5.00, 21.0, 23,500, 23.00, 49.00, and 335.0 mg/kg, respectively). The second group, represented by S2–S5, S9, S10, S13, S14, S17, S18, S21, S23, S28, S30, and S31, demonstrated the lowest concentrations of As, Cu, Fe, Pb, Ni, and Zn (2.00, 3.0, 9,500, 2.00, 9.00, and 16.0 mg/kg, respectively). Figure 3 illustrates the distribution of PTEs across the 31 soil samples, highlighting that S2 and S9 from Al Hariq, and S21 from Naam reported the lowest PTE concentrations, while S15 from Al Mufayger, S22 from Naam, and S27 from Hawtat bani tamim exhibited the highest concentrations among the samples.

Figure 2 Q-mode HCA of soil samples from southwest Riyadh.
Figure 2

Q-mode HCA of soil samples from southwest Riyadh.

Figure 3 Distribution of the PTEs in soil from southwest Riyadh.
Figure 3

Distribution of the PTEs in soil from southwest Riyadh.

3.2 Contamination and risk assessment

PTEs contaminate agricultural soils through the extensive application of both inorganic and organic fertilizers, pesticides, irrigation water, and animal dung [52]. While Cr, As, and Pb pose significant environmental concerns as pollutants, Fe, Ni, Cu, and Zn are essential PTEs vital for various biological activities, albeit in low concentrations [12,53]. To assess PTE contamination in the examined soil, CF, I geo, and EF were utilized (Figure 4, Table S5). The average EF values for the PTEs were as follows: As (6.05), Zn (1.96), Ni (1.43), Pb (0.90), and Cu (0.84), indicating that the studied soil is moderately enriched with As and deficiency to minimal enrichment for Zn, Ni, Cu, and Pb. The EF analysis results indicate that all soil samples demonstrated deficiency to minimal enrichment levels of Pb and Cu. Among them, 30 soil samples exhibited deficiency to minimal enrichment with Ni, with one sample displaying moderate enrichment with Ni. In terms of Zn, the analysis revealed that 25 samples displayed deficiency to minimal enrichment, while 3 samples showed moderate enrichment, and the remaining 3 samples exhibited significant enrichment. Additionally, 5 samples showed moderate enrichment with As, while the remaining 26 samples displayed significant enrichment with As. The most substantial enrichment was observed in samples such as S9, S13, S22, S25, and S27, located in Al Hariq, Al Mufayger, Naam, and Hawtat Bani Tamim areas.

Figure 4 Distribution of the average values of the single contamination indices (EF, I geo, and CF) of soil samples from southwest Riyadh.
Figure 4

Distribution of the average values of the single contamination indices (EF, I geo, and CF) of soil samples from southwest Riyadh.

The average CF values for the PTEs in the investigated soil indicated moderate contamination for As and low contamination with the other PTEs (Table S5). Additionally, certain individual samples exhibited considerable contamination, such as S22 for Zn (CF = 3.53). Zn is highly mobile during weathering processes and tends to accumulate in argillaceous sediments. Anthropogenic sources of Zn include the nonferrous metal industry and agricultural practices [45]. The I geo was employed to assess soil pollution by PTEs [53]. The current average I geo values indicated unpolluted to moderately polluted conditions for As, as they were below zero, while for the rest of the PTEs, the values signified unpolluted soil. However, S22 and S27 showed I geo values for Zn (1.55 and 1.12, respectively), suggesting moderate pollution for Zn in these two samples.

PLI is utilized to indicate the degradation of soil conditions resulting from the accumulation of PTEs [54]. It ranged from 0.16 to 0.59, with an average of 0.38 (Table S4), suggesting relatively clean soil conditions (PLI < 1). The RI, assesses the impact caused by pollutants, including potentially toxic elements (PTEs), in the environment [34]. RI encompasses various environmental effects and can evaluate ecological risks caused by PTEs [55,56]. In the study area, RI values follow a similar distribution trend to PLI values, varying from 15.70 to 46.69, with an average of 30.48 (Table S4), indicating no to low risk of the PTEs in the studied soil or the PTEs do not pose a significant threat according to the classification reported by Hakanson [34].

3.3 Multivariate analyses

The correlation matrix presented in Table 2 reveals substantial positive correlations among various pairs of PTEs, such as As with Cu, Fe, Ni, and Pb (with correlation coefficients of 0.799, 0.830, 0.790, and 0.542, respectively). These findings suggest a common origin for these PTEs. The presence of Fe in this positive correlation implies that these elements are attributed to the parent material, from the weathering of nearby sedimentary succession in the study area [3,57,58,59]. However, the soil’s average EF for As is 6.02, suggesting potential human influences, possibly from fertilizers, insecticides, and animal dung, which contain a substantial amount of As [45,60]. In contrast, Zn exhibits a weak correlation with all PTEs except Pb (with a correlation coefficient of 0.842), indicating a shared source for Pb and Zn. Zinc concentrations are likely elevated in argillaceous sediments, calcareous soils, and organic soils in sedimentary rocks, influenced by hydrous oxides and clay minerals. However, notable enrichment was observed in S22 and S27 for Zn and in S22 for Pb, potentially attributed to fertilizer use and other agricultural practices in those specific sites [61,62].

Table 2

Correlation matrix for HMs of soil samples from southwest Riyadh

As Cu Fe Ni Pb Zn
As 1
Cu 0.799 ** 1
Fe 0.830 ** 0.851 ** 1
Ni 0.790 ** 0.831 ** 0.798 ** 1
Pb 0.542 ** 0.648 ** 0.513 ** 0.384* 1
Zn 0.352 0.487** 0.291 0.327 0.842 ** 1

The bold values reveals substantial positive correlations among various pairs of PTEs. ** means correlation is significant at the 0.01 level.

The validity of the correlation analysis findings was strongly supported by principal component analysis (PCA). Two principal components (PCs) were identified, collectively accounting for 73.51 and 13.12% of the overall variation (Table 3). The first PC displayed notable loadings for As, Cu, Fe, Ni, and Pb. The high loadings of these PTEs on the first PC suggested a potential geogenic origin. In contrast, PC2 showed significant loadings for Pb and Zn, implying a minor enrichment possibly originating from both geogenic and human sources. The utilization of phosphate fertilizers and fungicides in agricultural fields to improve yields may contribute to this enrichment, as suggested by the loadings on PC2 [3]. Additionally, animal manure and sewage sludge represent potential human factors introducing Cu, Zn, Pb, and Ni to the soil [63].

Table 3

Loading matrix of PCs and the total variance explained by each PC

Component
PC1 PC 2
As 0.902 0.030
Cu 0.913 0.184
Fe 0.894 −0.004
Ni 0.956 −0.136
Pb 0.555 0.791
Zn 0.405 0.863
% of Variance 73.51 13.12
Cumulative % 73.51 86.64

Bold values indicated notable loadings for PTEs.

3.4 Health risk assessment

Health risk assessment is a widely used method for estimating both non-carcinogenic and carcinogenic risks posed to humans exposed to contaminants found in the air, water, and soil [3]. In this study, health risk assessment is conducted exclusively for agricultural soil samples, considering various exposure pathways. Table 4 presents the average values of the CDI, hazard quotient (HQ), and HI for the non-carcinogenic risk of PTEs on adults and children. For adults, the average CDI values (mg/kg/day) from ingestion, dermal contact, and inhalation pathways ranged from 6.95641 × 10−8 (Cu) to 0.021307597 (Fe), from 7.60651 × 10−8 (Cu) to 3.490 × 10−7 (Zn), and from 6.77606 × 10−11 (As) to 1.286 × 10−9 (Zn), respectively. In children, CDI values ranged from 7.82621 × 10−5 (Pb) to 0.198870901 (Fe), from 8.57958 × 10−8 (As) to 1.629 × 10−6 (Zn), and from 5.75456 × 10−10 (Pb) to 6.002 × 10−9 (Zn), respectively. The results indicate that the average daily dose is highest through ingestion, followed by dermal contact and inhalation routes, regardless of the population group. Moreover, the average CDI values from the ingestion pathway in children for all PTEs showed an increase approximately 9.33 × 10 times, and 4.67 × 10 times for both inhalation and dermal pathways compared to adults. The higher CDI due to the ingestion of soil by children may be attributed to their increased sensitivity to exposure, making them more prone to absorbing toxic PTEs than adults [64,65].

Table 4

CDI (mg/kg/day), HQ, and HI for non-carcinogenic risk in adults and children from southwest Riyadh

HMs CDIIng CDIDerm CDIInh HQIng HQDem HQInh HI
Adults
As 4.608 × 10−6 1.838 × 10−8 6.776 × 10−11 0.015 6.128 × 10−5 2.259 × 10−7 0.0152
Pb 8.386 × 10−6 3.346 × 10−8 1.233 × 10−10 0.002 9.559 × 10−6 3.523 × 10−8 0.0024
Cu 6.957 × 10−8 7.607 × 10−8 2.564 × 10−10 0.0005 1.875 × 10−6 6.911 × 10−9 0.00047
Ni 3.819 × 10−5 1.520 × 10−7 5.604 × 10−10 0.002 7.602 × 10−6 2.662 × 10−8 0.0018
Zn 8.746 × 10−5 3.490 × 10−7 1.286 × 10−9 0.00030 1.163 × 10−6 4.287 × 10−9 0.00029
Fe 0.021 — — 0.030 — — 0.0304
Children
As 4.301 × 10−5 8.580 × 10−8 3.162 × 10−10 0.143 0.00029 1.05 × 10−6 0.1436
Pb 7.826 × 10−5 1.5610 × 10−7 5.755 × 10−10 0.0224 4.461 × 10−5 1.644 × 10−7 0.022
Cu 0.00016 3.246 × 10−7 1.196 × 10−9 0.0044 8.750 × 10−6 3.225 × 10−8 0.0044
Ni 0.00036 7.096 × 10−7 2.615 × 10−9 0.0178 3.548 × 10−5 1.308 × 10−7 0.0178
Zn 0.00082 1.629 × 10−6 6.002 × 10−9 0.0027 5.429 × 10−6 2.0008 × 10−8 0.0027
Fe 0.1989 — — 0.284 — — 0.284

The average HI values ranged from 0.000293 (Zn) to 0.0304 (Fe) for adults and from 0.002726541 (Zn) to 0.284 (Fe) for children (Table 4). The results indicated that the primary exposure route to PTEs in the study area was through ingestion. The HIs for PTEs in the study area were below 1.0, signifying that residents are not at a significantly non-carcinogenic risk [66,67]. However, the average HI value for Fe exceeded 0.2 for children, highlighting the need to protect their health [39]. The spatial distribution of the HI for PTEs at each sample location for both children and adults (Figure 5, Table S6) revealed similar patterns and hotspots in S11 and S15 (As and Fe), S11 and S22 (Cu), S22 (Pb), S15 and S27 (Ni), and S22 and S27 (Zn). These samples were collected from Al Hariq, Al Mufayger, Naam, and Hawtat Bani Tamim areas and from farms irrigated with treated groundwater.

Figure 5 Spatial distribution of HI of PTEs per sampled location from southwest Riyadh.
Figure 5 Spatial distribution of HI of PTEs per sampled location from southwest Riyadh.
Figure 5

Spatial distribution of HI of PTEs per sampled location from southwest Riyadh.

The CRs for As and Pb in children were found to be significantly greater than those in adults (Table 5). The average CR values in ingestion and inhalation pathways for adults ranged from 7.12744 × 10−8 to 6.91158 × 10−6 and from 1.04815 × 10−12 to 1.01641 × 10−10, respectively. In comparison, for children, the CR values varied from 6.65228 × 10−7 to 6.45081 × 10−5 and from 4.89138 × 10−12 to 4.74324 × 10−10, respectively. Children’s CR values for As and Pb are higher than those for adults, indicating that children are more likely to be exposed to PTEs due to their behavioral habits that increase the likelihood of skin contact, especially with hands [55,68,69].

Table 5

Average CRs and LCR for PTEs from southwest Riyadh

HMs CRIng CRDerm CRInh LCR
Adults
As 6.91158 × 10−6 2.75772 × 10−8 1.01641 × 10−10 6.94 × 10−6
Pb 7.12744 × 10−8 — 1.04815 × 10−12 7.13 × 10−8
Children
As 6.45081 × 10−5 1.28694 × 10−7 4.74324 × 10−10 6.46 × 10−5
Pb 6.65228 × 10−7 — 4.89138 × 10−12 6.65 × 10−7

The values of the total LCR for As and Pb in all studied sites were higher in children than in adults (Table S7). LCR values varied between adults and children from 6.94 × 10−6 to 6.46 × 10−5 (As) and from 7.13 × 10−8 to 6.65 × 10−7 for Pb, respectively. The carcinogenic risk of the ingestion pathway was the principal contributor to the total LCR. The spatial distribution of the LCR for As and Pb per sample location suggested a similar pattern for both children and adults with increased values in children (Figure 6). S11 and S15 showed a hotspot for As, while S22 showed a hotspot for Pb. LCR values for As were between 1 × 10−6 and 1 × 10−4, while they were lower than 1 × 10−6 for Pb, indicating acceptable or tolerable carcinogenic risk and no significant health hazards, respectively [38,69].

Figure 6 Spatial distribution of LCR for As, and Pb per sampled location from southwest Riyadh.
Figure 6

Spatial distribution of LCR for As, and Pb per sampled location from southwest Riyadh.

4 Conclusion

The current study shed light on the contamination and associated health risks posed by As, Pb, Cu, Ni, Zn, and Fe in agricultural soil from southwest Riyadh, Saudi Arabia. The tested PTEs exhibited the following ranges: Fe (9,300–23,500 mg/kg), Zn (16.0–335 mg/kg), Ni (9.00–49.00 mg/kg), Cu (3.00–21.0 mg/kg), Pb (2.00–23.00 mg/kg), and As (2.00–5.00 mg/kg). The average values of these PTEs were lower compared to those reported from the northeast of Iran, the Gangetic plain in India, background levels, and the world-soil average. The studied soil is moderately enriched and contaminated with As and deficiency to minimal enrichment and low contaminated with the remaining PTEs. RI values implied that the PTEs in the studied soil do not pose a significant threat. The correlation matrix and principal component analysis identified a geogenic source for the PTEs, while some anthropogenic influences were observed for As, Zn, and Pb, possibly originating from animal manure and fertilizers used in certain farms. Results indicate that the average daily dose is primarily highest through ingestion, followed by dermal contact and inhalation routes, regardless of the population group. The average HI values ranged from 0.000293 (Zn) to 0.0304 (Fe) for adults and from 0.002726541 (Zn) to 0.284 (Fe) for children The HIs for PTEs in the study area were below 1.0, signifying that residents are not at a significantly non-carcinogenic risk. LCR values for As were between 1 × 10−4 and 1 × 10−6, while they were lower than 1 × 10−6 for Pb, indicating acceptable or tolerable carcinogenic risk and no significant health hazards.

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Acknowledgements

The authors extend their appreciation to Researchers Supporting Project number (RSPD2024R1044), King Saud University, Riyadh, Saudi Arabia.

  1. Funding information: Researchers Supporting Project number RSPD2024R1044, King Saud University, Riyadh, Saudi Arabia.

  2. Author contributions: Abdelbaset El-Sorogy: original draft preparation, reviewing and submitting the manuscript; Mohammed Al Khathlan collecting soil samples, design of methodology and mapping.

  3. Conflict of interest: The current article does not have any conflict of interest.

  4. Data availability statement: All data generated or analyzed during this study are included in this published article.

  5. Ethical approval: The present study does not use or harm any animals and followed all the scientific ethics.

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Received: 2024-01-13
Revised: 2024-03-26
Accepted: 2024-03-30
Published Online: 2024-04-23

© 2024 the author(s), published by De Gruyter

This work is licensed under the Creative Commons Attribution 4.0 International License.

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  90. Anti-melanoma cancer activity and chemical profile of the essential oil of Seseli yunnanense Franch
  91. Molecular docking analysis of subtilisin-like alkaline serine protease (SLASP) and laccase with natural biopolymers
  92. Overcoming methicillin resistance by methicillin-resistant Staphylococcus aureus: Computational evaluation of napthyridine and oxadiazoles compounds for potential dual inhibition of PBP-2a and FemA proteins
  93. Exploring novel antitubercular agents: Innovative design of 2,3-diaryl-quinoxalines targeting DprE1 for effective tuberculosis treatment
  94. Drimia maritima flowers as a source of biologically potent components: Optimization of bioactive compound extractions, isolation, UPLC–ESI–MS/MS, and pharmacological properties
  95. Estimating molecular properties, drug-likeness, cardiotoxic risk, liability profile, and molecular docking study to characterize binding process of key phyto-compounds against serotonin 5-HT2A receptor
  96. Fabrication of β-cyclodextrin-based microgels for enhancing solubility of Terbinafine: An in-vitro and in-vivo toxicological evaluation
  97. Phyto-mediated synthesis of ZnO nanoparticles and their sunlight-driven photocatalytic degradation of cationic and anionic dyes
  98. Monosodium glutamate induces hypothalamic–pituitary–adrenal axis hyperactivation, glucocorticoid receptors down-regulation, and systemic inflammatory response in young male rats: Impact on miR-155 and miR-218
  99. Quality control analyses of selected honey samples from Serbia based on their mineral and flavonoid profiles, and the invertase activity
  100. Eco-friendly synthesis of silver nanoparticles using Phyllanthus niruri leaf extract: Assessment of antimicrobial activity, effectiveness on tropical neglected mosquito vector control, and biocompatibility using a fibroblast cell line model
  101. Green synthesis of silver nanoparticles containing Cichorium intybus to treat the sepsis-induced DNA damage in the liver of Wistar albino rats
  102. Quality changes of durian pulp (Durio ziberhinus Murr.) in cold storage
  103. Study on recrystallization process of nitroguanidine by directly adding cold water to control temperature
  104. Determination of heavy metals and health risk assessment in drinking water in Bukayriyah City, Saudi Arabia
  105. Larvicidal properties of essential oils of three Artemisia species against the chemically insecticide-resistant Nile fever vector Culex pipiens (L.) (Diptera: Culicidae): In vitro and in silico studies
  106. Design, synthesis, characterization, and theoretical calculations, along with in silico and in vitro antimicrobial proprieties of new isoxazole-amide conjugates
  107. The impact of drying and extraction methods on total lipid, fatty acid profile, and cytotoxicity of Tenebrio molitor larvae
  108. A zinc oxide–tin oxide–nerolidol hybrid nanomaterial: Efficacy against esophageal squamous cell carcinoma
  109. Research on technological process for production of muskmelon juice (Cucumis melo L.)
  110. Physicochemical components, antioxidant activity, and predictive models for quality of soursop tea (Annona muricata L.) during heat pump drying
  111. Characterization and application of Fe1−xCoxFe2O4 nanoparticles in Direct Red 79 adsorption
  112. Torilis arvensis ethanolic extract: Phytochemical analysis, antifungal efficacy, and cytotoxicity properties
  113. Magnetite–poly-1H pyrrole dendritic nanocomposite seeded on poly-1H pyrrole: A promising photocathode for green hydrogen generation from sanitation water without using external sacrificing agent
  114. HPLC and GC–MS analyses of phytochemical compounds in Haloxylon salicornicum extract: Antibacterial and antifungal activity assessment of phytopathogens
  115. Efficient and stable to coking catalysts of ethanol steam reforming comprised of Ni + Ru loaded on MgAl2O4 + LnFe0.7Ni0.3O3 (Ln = La, Pr) nanocomposites prepared via cost-effective procedure with Pluronic P123 copolymer
  116. Nitrogen and boron co-doped carbon dots probe for selectively detecting Hg2+ in water samples and the detection mechanism
  117. Heavy metals in road dust from typical old industrial areas of Wuhan: Seasonal distribution and bioaccessibility-based health risk assessment
  118. Phytochemical profiling and bioactivity evaluation of CBD- and THC-enriched Cannabis sativa extracts: In vitro and in silico investigation of antioxidant and anti-inflammatory effects
  119. Investigating dye adsorption: The role of surface-modified montmorillonite nanoclay in kinetics, isotherms, and thermodynamics
  120. Antimicrobial activity, induction of ROS generation in HepG2 liver cancer cells, and chemical composition of Pterospermum heterophyllum
  121. Study on the performance of nanoparticle-modified PVDF membrane in delaying membrane aging
  122. Impact of cholesterol in encapsulated vitamin E acetate within cocoliposomes
  123. Review Articles
  124. Structural aspects of Pt(η3-X1N1X2)(PL) (X1,2 = O, C, or Se) and Pt(η3-N1N2X1)(PL) (X1 = C, S, or Se) derivatives
  125. Biosurfactants in biocorrosion and corrosion mitigation of metals: An overview
  126. Stimulus-responsive MOF–hydrogel composites: Classification, preparation, characterization, and their advancement in medical treatments
  127. Electrochemical dissolution of titanium under alternating current polarization to obtain its dioxide
  128. Special Issue on Recent Trends in Green Chemistry
  129. Phytochemical screening and antioxidant activity of Vitex agnus-castus L.
  130. Phytochemical study, antioxidant activity, and dermoprotective activity of Chenopodium ambrosioides (L.)
  131. Exploitation of mangliculous marine fungi, Amarenographium solium, for the green synthesis of silver nanoparticles and their activity against multiple drug-resistant bacteria
  132. Study of the phytotoxicity of margines on Pistia stratiotes L.
  133. Special Issue on Advanced Nanomaterials for Energy, Environmental and Biological Applications - Part III
  134. Impact of biogenic zinc oxide nanoparticles on growth, development, and antioxidant system of high protein content crop (Lablab purpureus L.) sweet
  135. Green synthesis, characterization, and application of iron and molybdenum nanoparticles and their composites for enhancing the growth of Solanum lycopersicum
  136. Green synthesis of silver nanoparticles from Olea europaea L. extracted polysaccharides, characterization, and its assessment as an antimicrobial agent against multiple pathogenic microbes
  137. Photocatalytic treatment of organic dyes using metal oxides and nanocomposites: A quantitative study
  138. Antifungal, antioxidant, and photocatalytic activities of greenly synthesized iron oxide nanoparticles
  139. Special Issue on Phytochemical and Pharmacological Scrutinization of Medicinal Plants
  140. Hepatoprotective effects of safranal on acetaminophen-induced hepatotoxicity in rats
  141. Chemical composition and biological properties of Thymus capitatus plants from Algerian high plains: A comparative and analytical study
  142. Chemical composition and bioactivities of the methanol root extracts of Saussurea costus
  143. In vivo protective effects of vitamin C against cyto-genotoxicity induced by Dysphania ambrosioides aqueous extract
  144. Insights about the deleterious impact of a carbamate pesticide on some metabolic immune and antioxidant functions and a focus on the protective ability of a Saharan shrub and its anti-edematous property
  145. A comprehensive review uncovering the anticancerous potential of genkwanin (plant-derived compound) in several human carcinomas
  146. A study to investigate the anticancer potential of carvacrol via targeting Notch signaling in breast cancer
  147. Assessment of anti-diabetic properties of Ziziphus oenopolia (L.) wild edible fruit extract: In vitro and in silico investigations through molecular docking analysis
  148. Optimization of polyphenol extraction, phenolic profile by LC-ESI-MS/MS, antioxidant, anti-enzymatic, and cytotoxic activities of Physalis acutifolia
  149. Phytochemical screening, antioxidant properties, and photo-protective activities of Salvia balansae de Noé ex Coss
  150. Antihyperglycemic, antiglycation, anti-hypercholesteremic, and toxicity evaluation with gas chromatography mass spectrometry profiling for Aloe armatissima leaves
  151. Phyto-fabrication and characterization of gold nanoparticles by using Timur (Zanthoxylum armatum DC) and their effect on wound healing
  152. Does Erodium trifolium (Cav.) Guitt exhibit medicinal properties? Response elements from phytochemical profiling, enzyme-inhibiting, and antioxidant and antimicrobial activities
  153. Integrative in silico evaluation of the antiviral potential of terpenoids and its metal complexes derived from Homalomena aromatica based on main protease of SARS-CoV-2
  154. 6-Methoxyflavone improves anxiety, depression, and memory by increasing monoamines in mice brain: HPLC analysis and in silico studies
  155. Simultaneous extraction and quantification of hydrophilic and lipophilic antioxidants in Solanum lycopersicum L. varieties marketed in Saudi Arabia
  156. Biological evaluation of CH3OH and C2H5OH of Berberis vulgaris for in vivo antileishmanial potential against Leishmania tropica in murine models
https://doi.org/10.1515/chem-2024-0017
Schlagwörter für diesen Artikel
potentially toxic elements; health risk assessment; principal component analysis; agriculture soil; Saudi Arabia
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Artikel in diesem Heft

  1. Regular Articles
  2. Porous silicon nanostructures: Synthesis, characterization, and their antifungal activity
  3. Biochar from de-oiled Chlorella vulgaris and its adsorption on antibiotics
  4. Phytochemicals profiling, in vitro and in vivo antidiabetic activity, and in silico studies on Ajuga iva (L.) Schreb.: A comprehensive approach
  5. Synthesis, characterization, in silico and in vitro studies of novel glycoconjugates as potential antibacterial, antifungal, and antileishmanial agents
  6. Sonochemical synthesis of gold nanoparticles mediated by potato starch: Its performance in the treatment of esophageal cancer
  7. Computational study of ADME-Tox prediction of selected phytochemicals from Punica granatum peels
  8. Phytochemical analysis, in vitro antioxidant and antifungal activities of extracts and essential oil derived from Artemisia herba-alba Asso
  9. Two triazole-based coordination polymers: Synthesis and crystal structure characterization
  10. Phytochemical and physicochemical studies of different apple varieties grown in Morocco
  11. Synthesis of multi-template molecularly imprinted polymers (MT-MIPs) for isolating ethyl para-methoxycinnamate and ethyl cinnamate from Kaempferia galanga L., extract with methacrylic acid as functional monomer
  12. Nutraceutical potential of Mesembryanthemum forsskaolii Hochst. ex Bioss.: Insights into its nutritional composition, phytochemical contents, and antioxidant activity
  13. Evaluation of influence of Butea monosperma floral extract on inflammatory biomarkers
  14. Cannabis sativa L. essential oil: Chemical composition, anti-oxidant, anti-microbial properties, and acute toxicity: In vitro, in vivo, and in silico study
  15. The effect of gamma radiation on 5-hydroxymethylfurfural conversion in water and dimethyl sulfoxide
  16. Hollow mushroom nanomaterials for potentiometric sensing of Pb2+ ions in water via the intercalation of iodide ions into the polypyrrole matrix
  17. Determination of essential oil and chemical composition of St. John’s Wort
  18. Computational design and in vitro assay of lantadene-based novel inhibitors of NS3 protease of dengue virus
  19. Anti-parasitic activity and computational studies on a novel labdane diterpene from the roots of Vachellia nilotica
  20. Microbial dynamics and dehydrogenase activity in tomato (Lycopersicon esculentum Mill.) rhizospheres: Impacts on growth and soil health across different soil types
  21. Correlation between in vitro anti-urease activity and in silico molecular modeling approach of novel imidazopyridine–oxadiazole hybrids derivatives
  22. Spatial mapping of indoor air quality in a light metro system using the geographic information system method
  23. Iron indices and hemogram in renal anemia and the improvement with Tribulus terrestris green-formulated silver nanoparticles applied on rat model
  24. Integrated track of nano-informatics coupling with the enrichment concept in developing a novel nanoparticle targeting ERK protein in Naegleria fowleri
  25. Cytotoxic and phytochemical screening of Solanum lycopersicum–Daucus carota hydro-ethanolic extract and in silico evaluation of its lycopene content as anticancer agent
  26. Protective activities of silver nanoparticles containing Panax japonicus on apoptotic, inflammatory, and oxidative alterations in isoproterenol-induced cardiotoxicity
  27. pH-based colorimetric detection of monofunctional aldehydes in liquid and gas phases
  28. Investigating the effect of resveratrol on apoptosis and regulation of gene expression of Caco-2 cells: Unravelling potential implications for colorectal cancer treatment
  29. Metformin inhibits knee osteoarthritis induced by type 2 diabetes mellitus in rats: S100A8/9 and S100A12 as players and therapeutic targets
  30. Effect of silver nanoparticles formulated by Silybum marianum on menopausal urinary incontinence in ovariectomized rats
  31. Synthesis of new analogs of N-substituted(benzoylamino)-1,2,3,6-tetrahydropyridines
  32. Response of yield and quality of Japonica rice to different gradients of moisture deficit at grain-filling stage in cold regions
  33. Preparation of an inclusion complex of nickel-based β-cyclodextrin: Characterization and accelerating the osteoarthritis articular cartilage repair
  34. Empagliflozin-loaded nanomicelles responsive to reactive oxygen species for renal ischemia/reperfusion injury protection
  35. Preparation and pharmacodynamic evaluation of sodium aescinate solid lipid nanoparticles
  36. Assessment of potentially toxic elements and health risks of agricultural soil in Southwest Riyadh, Saudi Arabia
  37. Theoretical investigation of hydrogen-rich fuel production through ammonia decomposition
  38. Biosynthesis and screening of cobalt nanoparticles using citrus species for antimicrobial activity
  39. Investigating the interplay of genetic variations, MCP-1 polymorphism, and docking with phytochemical inhibitors for combatting dengue virus pathogenicity through in silico analysis
  40. Ultrasound induced biosynthesis of silver nanoparticles embedded into chitosan polymers: Investigation of its anti-cutaneous squamous cell carcinoma effects
  41. Copper oxide nanoparticles-mediated Heliotropium bacciferum leaf extract: Antifungal activity and molecular docking assays against strawberry pathogens
  42. Sprouted wheat flour for improving physical, chemical, rheological, microbial load, and quality properties of fino bread
  43. Comparative toxicity assessment of fisetin-aided artificial intelligence-assisted drug design targeting epibulbar dermoid through phytochemicals
  44. Acute toxicity and anti-inflammatory activity of bis-thiourea derivatives
  45. Anti-diabetic activity-guided isolation of α-amylase and α-glucosidase inhibitory terpenes from Capsella bursa-pastoris Linn.
  46. GC–MS analysis of Lactobacillus plantarum YW11 metabolites and its computational analysis on familial pulmonary fibrosis hub genes
  47. Green formulation of copper nanoparticles by Pistacia khinjuk leaf aqueous extract: Introducing a novel chemotherapeutic drug for the treatment of prostate cancer
  48. Improved photocatalytic properties of WO3 nanoparticles for Malachite green dye degradation under visible light irradiation: An effect of La doping
  49. One-pot synthesis of a network of Mn2O3–MnO2–poly(m-methylaniline) composite nanorods on a polypyrrole film presents a promising and efficient optoelectronic and solar cell device
  50. Groundwater quality and health risk assessment of nitrate and fluoride in Al Qaseem area, Saudi Arabia
  51. A comparative study of the antifungal efficacy and phytochemical composition of date palm leaflet extracts
  52. Processing of alcohol pomelo beverage (Citrus grandis (L.) Osbeck) using saccharomyces yeast: Optimization, physicochemical quality, and sensory characteristics
  53. Specialized compounds of four Cameroonian spices: Isolation, characterization, and in silico evaluation as prospective SARS-CoV-2 inhibitors
  54. Identification of a novel drug target in Porphyromonas gingivalis by a computational genome analysis approach
  55. Physico-chemical properties and durability of a fly-ash-based geopolymer
  56. FMS-like tyrosine kinase 3 inhibitory potentials of some phytochemicals from anti-leukemic plants using computational chemical methodologies
  57. Wild Thymus zygis L. ssp. gracilis and Eucalyptus camaldulensis Dehnh.: Chemical composition, antioxidant and antibacterial activities of essential oils
  58. 3D-QSAR, molecular docking, ADMET, simulation dynamic, and retrosynthesis studies on new styrylquinolines derivatives against breast cancer
  59. Deciphering the influenza neuraminidase inhibitory potential of naturally occurring biflavonoids: An in silico approach
  60. Determination of heavy elements in agricultural regions, Saudi Arabia
  61. Synthesis and characterization of antioxidant-enriched Moringa oil-based edible oleogel
  62. Ameliorative effects of thistle and thyme honeys on cyclophosphamide-induced toxicity in mice
  63. Study of phytochemical compound and antipyretic activity of Chenopodium ambrosioides L. fractions
  64. Investigating the adsorption mechanism of zinc chloride-modified porous carbon for sulfadiazine removal from water
  65. Performance repair of building materials using alumina and silica composite nanomaterials with electrodynamic properties
  66. Effects of nanoparticles on the activity and resistance genes of anaerobic digestion enzymes in livestock and poultry manure containing the antibiotic tetracycline
  67. Effect of copper nanoparticles green-synthesized using Ocimum basilicum against Pseudomonas aeruginosa in mice lung infection model
  68. Cardioprotective effects of nanoparticles green formulated by Spinacia oleracea extract on isoproterenol-induced myocardial infarction in mice by the determination of PPAR-γ/NF-κB pathway
  69. Anti-OTC antibody-conjugated fluorescent magnetic/silica and fluorescent hybrid silica nanoparticles for oxytetracycline detection
  70. Curcumin conjugated zinc nanoparticles for the treatment of myocardial infarction
  71. Identification and in silico screening of natural phloroglucinols as potential PI3Kα inhibitors: A computational approach for drug discovery
  72. Exploring the phytochemical profile and antioxidant evaluation: Molecular docking and ADMET analysis of main compounds from three Solanum species in Saudi Arabia
  73. Unveiling the molecular composition and biological properties of essential oil derived from the leaves of wild Mentha aquatica L.: A comprehensive in vitro and in silico exploration
  74. Analysis of bioactive compounds present in Boerhavia elegans seeds by GC-MS
  75. Homology modeling and molecular docking study of corticotrophin-releasing hormone: An approach to treat stress-related diseases
  76. LncRNA MIR17HG alleviates heart failure via targeting MIR17HG/miR-153-3p/SIRT1 axis in in vitro model
  77. Development and validation of a stability indicating UPLC-DAD method coupled with MS-TQD for ramipril and thymoquinone in bioactive SNEDDS with in silico toxicity analysis of ramipril degradation products
  78. Biosynthesis of Ag/Cu nanocomposite mediated by Curcuma longa: Evaluation of its antibacterial properties against oral pathogens
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  80. Treatment of gestational diabetes by Acroptilon repens leaf aqueous extract green-formulated iron nanoparticles in rats
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  88. Preparation, characterization, and determination of the therapeutic effects of copper nanoparticles green-formulated by Pistacia atlantica in diabetes-induced cardiac dysfunction in rat
  89. Antioxidant and antidiabetic potentials of methoxy-substituted Schiff bases using in vitro, in vivo, and molecular simulation approaches
  90. Anti-melanoma cancer activity and chemical profile of the essential oil of Seseli yunnanense Franch
  91. Molecular docking analysis of subtilisin-like alkaline serine protease (SLASP) and laccase with natural biopolymers
  92. Overcoming methicillin resistance by methicillin-resistant Staphylococcus aureus: Computational evaluation of napthyridine and oxadiazoles compounds for potential dual inhibition of PBP-2a and FemA proteins
  93. Exploring novel antitubercular agents: Innovative design of 2,3-diaryl-quinoxalines targeting DprE1 for effective tuberculosis treatment
  94. Drimia maritima flowers as a source of biologically potent components: Optimization of bioactive compound extractions, isolation, UPLC–ESI–MS/MS, and pharmacological properties
  95. Estimating molecular properties, drug-likeness, cardiotoxic risk, liability profile, and molecular docking study to characterize binding process of key phyto-compounds against serotonin 5-HT2A receptor
  96. Fabrication of β-cyclodextrin-based microgels for enhancing solubility of Terbinafine: An in-vitro and in-vivo toxicological evaluation
  97. Phyto-mediated synthesis of ZnO nanoparticles and their sunlight-driven photocatalytic degradation of cationic and anionic dyes
  98. Monosodium glutamate induces hypothalamic–pituitary–adrenal axis hyperactivation, glucocorticoid receptors down-regulation, and systemic inflammatory response in young male rats: Impact on miR-155 and miR-218
  99. Quality control analyses of selected honey samples from Serbia based on their mineral and flavonoid profiles, and the invertase activity
  100. Eco-friendly synthesis of silver nanoparticles using Phyllanthus niruri leaf extract: Assessment of antimicrobial activity, effectiveness on tropical neglected mosquito vector control, and biocompatibility using a fibroblast cell line model
  101. Green synthesis of silver nanoparticles containing Cichorium intybus to treat the sepsis-induced DNA damage in the liver of Wistar albino rats
  102. Quality changes of durian pulp (Durio ziberhinus Murr.) in cold storage
  103. Study on recrystallization process of nitroguanidine by directly adding cold water to control temperature
  104. Determination of heavy metals and health risk assessment in drinking water in Bukayriyah City, Saudi Arabia
  105. Larvicidal properties of essential oils of three Artemisia species against the chemically insecticide-resistant Nile fever vector Culex pipiens (L.) (Diptera: Culicidae): In vitro and in silico studies
  106. Design, synthesis, characterization, and theoretical calculations, along with in silico and in vitro antimicrobial proprieties of new isoxazole-amide conjugates
  107. The impact of drying and extraction methods on total lipid, fatty acid profile, and cytotoxicity of Tenebrio molitor larvae
  108. A zinc oxide–tin oxide–nerolidol hybrid nanomaterial: Efficacy against esophageal squamous cell carcinoma
  109. Research on technological process for production of muskmelon juice (Cucumis melo L.)
  110. Physicochemical components, antioxidant activity, and predictive models for quality of soursop tea (Annona muricata L.) during heat pump drying
  111. Characterization and application of Fe1−xCoxFe2O4 nanoparticles in Direct Red 79 adsorption
  112. Torilis arvensis ethanolic extract: Phytochemical analysis, antifungal efficacy, and cytotoxicity properties
  113. Magnetite–poly-1H pyrrole dendritic nanocomposite seeded on poly-1H pyrrole: A promising photocathode for green hydrogen generation from sanitation water without using external sacrificing agent
  114. HPLC and GC–MS analyses of phytochemical compounds in Haloxylon salicornicum extract: Antibacterial and antifungal activity assessment of phytopathogens
  115. Efficient and stable to coking catalysts of ethanol steam reforming comprised of Ni + Ru loaded on MgAl2O4 + LnFe0.7Ni0.3O3 (Ln = La, Pr) nanocomposites prepared via cost-effective procedure with Pluronic P123 copolymer
  116. Nitrogen and boron co-doped carbon dots probe for selectively detecting Hg2+ in water samples and the detection mechanism
  117. Heavy metals in road dust from typical old industrial areas of Wuhan: Seasonal distribution and bioaccessibility-based health risk assessment
  118. Phytochemical profiling and bioactivity evaluation of CBD- and THC-enriched Cannabis sativa extracts: In vitro and in silico investigation of antioxidant and anti-inflammatory effects
  119. Investigating dye adsorption: The role of surface-modified montmorillonite nanoclay in kinetics, isotherms, and thermodynamics
  120. Antimicrobial activity, induction of ROS generation in HepG2 liver cancer cells, and chemical composition of Pterospermum heterophyllum
  121. Study on the performance of nanoparticle-modified PVDF membrane in delaying membrane aging
  122. Impact of cholesterol in encapsulated vitamin E acetate within cocoliposomes
  123. Review Articles
  124. Structural aspects of Pt(η3-X1N1X2)(PL) (X1,2 = O, C, or Se) and Pt(η3-N1N2X1)(PL) (X1 = C, S, or Se) derivatives
  125. Biosurfactants in biocorrosion and corrosion mitigation of metals: An overview
  126. Stimulus-responsive MOF–hydrogel composites: Classification, preparation, characterization, and their advancement in medical treatments
  127. Electrochemical dissolution of titanium under alternating current polarization to obtain its dioxide
  128. Special Issue on Recent Trends in Green Chemistry
  129. Phytochemical screening and antioxidant activity of Vitex agnus-castus L.
  130. Phytochemical study, antioxidant activity, and dermoprotective activity of Chenopodium ambrosioides (L.)
  131. Exploitation of mangliculous marine fungi, Amarenographium solium, for the green synthesis of silver nanoparticles and their activity against multiple drug-resistant bacteria
  132. Study of the phytotoxicity of margines on Pistia stratiotes L.
  133. Special Issue on Advanced Nanomaterials for Energy, Environmental and Biological Applications - Part III
  134. Impact of biogenic zinc oxide nanoparticles on growth, development, and antioxidant system of high protein content crop (Lablab purpureus L.) sweet
  135. Green synthesis, characterization, and application of iron and molybdenum nanoparticles and their composites for enhancing the growth of Solanum lycopersicum
  136. Green synthesis of silver nanoparticles from Olea europaea L. extracted polysaccharides, characterization, and its assessment as an antimicrobial agent against multiple pathogenic microbes
  137. Photocatalytic treatment of organic dyes using metal oxides and nanocomposites: A quantitative study
  138. Antifungal, antioxidant, and photocatalytic activities of greenly synthesized iron oxide nanoparticles
  139. Special Issue on Phytochemical and Pharmacological Scrutinization of Medicinal Plants
  140. Hepatoprotective effects of safranal on acetaminophen-induced hepatotoxicity in rats
  141. Chemical composition and biological properties of Thymus capitatus plants from Algerian high plains: A comparative and analytical study
  142. Chemical composition and bioactivities of the methanol root extracts of Saussurea costus
  143. In vivo protective effects of vitamin C against cyto-genotoxicity induced by Dysphania ambrosioides aqueous extract
  144. Insights about the deleterious impact of a carbamate pesticide on some metabolic immune and antioxidant functions and a focus on the protective ability of a Saharan shrub and its anti-edematous property
  145. A comprehensive review uncovering the anticancerous potential of genkwanin (plant-derived compound) in several human carcinomas
  146. A study to investigate the anticancer potential of carvacrol via targeting Notch signaling in breast cancer
  147. Assessment of anti-diabetic properties of Ziziphus oenopolia (L.) wild edible fruit extract: In vitro and in silico investigations through molecular docking analysis
  148. Optimization of polyphenol extraction, phenolic profile by LC-ESI-MS/MS, antioxidant, anti-enzymatic, and cytotoxic activities of Physalis acutifolia
  149. Phytochemical screening, antioxidant properties, and photo-protective activities of Salvia balansae de Noé ex Coss
  150. Antihyperglycemic, antiglycation, anti-hypercholesteremic, and toxicity evaluation with gas chromatography mass spectrometry profiling for Aloe armatissima leaves
  151. Phyto-fabrication and characterization of gold nanoparticles by using Timur (Zanthoxylum armatum DC) and their effect on wound healing
  152. Does Erodium trifolium (Cav.) Guitt exhibit medicinal properties? Response elements from phytochemical profiling, enzyme-inhibiting, and antioxidant and antimicrobial activities
  153. Integrative in silico evaluation of the antiviral potential of terpenoids and its metal complexes derived from Homalomena aromatica based on main protease of SARS-CoV-2
  154. 6-Methoxyflavone improves anxiety, depression, and memory by increasing monoamines in mice brain: HPLC analysis and in silico studies
  155. Simultaneous extraction and quantification of hydrophilic and lipophilic antioxidants in Solanum lycopersicum L. varieties marketed in Saudi Arabia
  156. Biological evaluation of CH3OH and C2H5OH of Berberis vulgaris for in vivo antileishmanial potential against Leishmania tropica in murine models
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