Startseite Naturwissenschaften Effect of Nano Zeolite on the Transformation of Cadmium Speciation and Its Uptake by Tobacco in Cadmium-contaminated Soil
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Effect of Nano Zeolite on the Transformation of Cadmium Speciation and Its Uptake by Tobacco in Cadmium-contaminated Soil

Nano Zeolite impact soil Cd Speciation and Cd Uptake by Tobacco
  • Qiulong Hu , Wei-ai Zeng , Fan Li , Yanning Huang , Songsong Gu , Hailin Cai , Min Zeng , Qiang Li und Lin Tan EMAIL logo
Veröffentlicht/Copyright: 18. Juli 2018
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Open Chemistry
Aus der Zeitschrift Open Chemistry Band 16 Heft 1

Abstract

The study was aimed at exploring the effects of applying ordinary and nano zeolite on the soil pH, soil available cadmium (Cd) content, soil Cd speciation and Cd uptakes by tobacco using pot experiment with simulated Cd contaminated soil indoors. The results showed that soil pH increased and available Cd content reduced with the amount of ordinary and nano zeolite increasing. Compared with the control, the application of ordinary and nano zeolite increased soil pH at 0.47 - 1.05 and 0.73 - 1.57, respectively, and reduced the available Cd contents at 19.3% - 32.7% and 23.2% - 40.5%, respectively. In addition, soil pH had significantly negative correlation with available Cd content in each treatment (p<0.05). Nano zeolite could more effectively reduce Cd contents of all parts of tobacco than ordinary zeolite with the same amount treatments, and Cd content in all parts of tobacco plants was positively correlated with soil available Cd content. The content of exchangeable Cd (EXE) in soil decreased to some extent with different zeolite treatments, application of nano zeolite was better than that of application of ordinary zeolite in reducing Cd bioavailability and transferability. Overall, application of nano zeolite has an advantage over ordinary zeolite in reducing available Cd content in soil and Cd content in tobacco.

Keywords: Nano Zeolite; Ordinary Zeolite; Soil Cd speciation; Cd uptake; Tobacco

1 Introduction

The heavy metal pollution has gained increasing atttention by the public and scientific researchers in recent years [1] . Cadmium (Cd) is one of the most toxic heavy metal elements in soil environment due to its strong chemical activity, large mobility, persistent toxicity, and nonbiodegradability [2,3]. Tobacco is a Cd enriching plant, the accumulation amounts of Cd in tobacco leaves accounted for 50% - 80% of the total Cd absorption amounts [4,5]. Tobacco is a product consumed by inhalation, during which Cd can enter human body through tobacco smoke. There is evidence that majority (approximately 70%) of Cd contained in cigarettes enter tobacco smoke, posing a health hazard to both active and passive smokers [6]. Some reports pointed out that the half-life of cadmium in human body is 13.6 - 23.5 years [7], Cd accumulation amounts of lifelong smokers is 2 times greater than that of non-smokers, and Cd concentration of blood of lifelong smokers is 4-5 times higher than that of non-smokers [8]. High Cd concentrations of blood for a long time is able to cause some organs disease and even cancer [9,10]. Therefore, it is important to explore how to reduce Cd absorption by tobacco through improving soils for tobacco planting.

In situ immobilization of heavy metals in contaminated soils by adding extraneous active amendments has been considered as a convenient and low cost measure for contaminated soil remediation. Some immobilization amendments were applied into the heavy metals contaminated soil, such as limestone, zeolite, phosphate and organic material, as well as nano-bio-repair materials and their combinations [11,12], can decrease the available fractions of heavy metals or change their redox states, and thus, effectively decrease the mobility, bioavailability, and toxicity of the heavy metals in soils. Therefore, the method of in-situ immobilization on soil heavy metals contamination has been widely used.

Zeolite is a porous aluminosilicate mineral. It has unique three-dimensional space frame structures, a huge surface area, a great ion adsorption and exchange capacity, which can improve physical and chemical characteristics of soil effectively and increase the utilization ratio of soil nutrient. In addition, the zeolite resources are rich in China, and its total amount is more than 10 billion tons, occupies third of the world resources [13]. Therefore, zeolite has been recognized as the high quality amendments for heavy metals contaminated soil [14,15]. However, the structure and nature of ordinary zeolite has some defects, such as the channels are easily confined, which affects the ion exchange capacity and the surface adsorption capacity, leading to the zeolite showing some limitations in the process of soil Cd pollution repair [14,16]. Nano zeolite after modification possesses the loose skeleton structure, uniform hole structure, larger specific surface area and unique adsorption function [17]. Theoretically, nano zeolite has a larger adsorption abilities and adsorption capacity than ordinary zeolite, which will be a great advantage in the heavy metal cadmium pollution repair for soil. Application of nano zeolite in control of soil Cd pollution and tobacco Cd absorption has not been reported at present. In this study, tobacco pot experiment was carried out to simulate the effects of ordinary zeolite and nano zeolite on soil pH, available Cd content, soil Cd speciation changes and Cd uptakes in tobacco plants. The results of this study provide a cost-effective method for control of heavy metal pollution, and contribute to theoretical basis and technical support for reduction of Cd uptake by tobacco in Cd-contaminated soils.

2 Materials and Methods

2.1 Materials

The tested tobacco cultivar was Yunyan 87 from Hunan Provincial Tobacco Company, Changsha City. The tested soil was the rotation soil (0-20 cm) for tobacco and rice from the Hunan Agricultural University Base of Middle South Agricultural Experimental Station of China Tobacco. The collected soils were air-dried, sieved using 2 mm sieve and placed into plastic bags for future use. The soil physical and chemical properties were measured by a previously reported method [18], and the results were as follows: pH 6.01, total Cd 0.35 mg kg-1, Organic matter 28.5 g kg-1, Alkali-hydrolyzable N 87.64 mg kg-1, Available P 18.45 mg kg-1, Available K 92.03 mg kg-1. The test ordinary zeolite and nano zeolite were purchased from a mine in Henan Province of China. The particle sizes were 0.15 mm and 80-90 nanometers, pH values were 8.8 and 8.5, cation exchange capacities (CEC) were 165 cmol kg-1 and 238 cmol kg-1, total specific surface areas were 268.2 m2 g-1 and 572.8 m2 g-1, the total Cd content were 0.33 mg kg-1 and 0.56 mg kg-1, respectively.

2.2 Pot test

The experiment was carried out in the greenhouse of the College of Plant Protection, Hunan Agricultural University from March 26 to June 26, 2017 using plastic buckets with 10.0 kg of the tested soil per pot. The analytical pure CdCl2.2.5H2O was used as Cd source and added as solution to the tested soil. The CdCl2.2.5H2O solution was mixed well with the soil to reach 10 mg kg-1[19], which is 10 times the Cd standard limits (1.0 mg kg-1) of the Grade III Environmental Quality Standard for Soils of China.

The soils were then treated with tobacco active organic and inorganic base fertilizer (total nutrient ≥ 29%, the ratio of nitrogen, phosphorus and potassium= 8:10:11) with 20, 40 and 60 g kg-1ordinary zeolite (OZ1, OZ2 and OZ3 ) and nano zeolite (NZ1, NZ2 and NZ3 ) at room temperature for two weeks prior to transplanting tobacco seedlings. Soil without any treatment was considered as the control (CK). Therefore, there were a total of 7 treatments. Three pots were used for each treatment. Two seedlings were transplanted (at 2 cm depth) into each pot. During the growing stage, special tobacco fertilizer (total nutrient content ≥ 42%, the ratio of nitrogen, phosphorus and potassium is 10:0:32) and agricultural potassium nitrate (total nutrient = 58%, K2O ≥ 44.5%, and total nitrogen (N) ≥ 13.5%) were applied once. At the maturation stage, the upper, middle and lower leaves and stems of tobacco samples were washed with deionized water and oven-dried at 105°C for 30 min and then 75°C for 48 h. After being dried to constant weight, samples were ground with a stainless steel mill. The rhizosphere soil samples of each plant were collected from roots by shaking soil attached to roots. The rhizosphere soil samples were then transported to the laboratory, naturally air-dried and sequentially sieved using a 100-mesh sieve, and collected for future measurement.

2.3 Measurements and Methods

2.3.1 Determination of soil pH and available Cd content

Soil pH was determined using a pH meter after mixing with water at 1.0:2.5 ratio [18]. Soil available Cd was extracted using diethylenetriaminepentaacetic acid (DTPA) [20]. Soil available Cd concentration in extracting solution was determined by ICP-MS (Thermo Fisher Scientific, USA)

2.3.2 Determination of Cd forms in soil

Chemical speciation of Cd was determined using Tessier’s sequential extraction method [21]. Different chemical speciation of Cd was determined by ICP-MS (Thermo Fisher Scientific, USA)

2.3.3 Determination of Cd in tobacco

Tobacco samples (0.2 g, weighed accurately to 0.0001 g) were microwave-digested (CEM, USA) with 8 mL of HNO3 at 180°C for 30 min. Cd concentration in digestion solution were determined by ICP-MS (Thermo Fisher Scientific, USA)

2.3.4 Data processing and analysis

All data were measured three times and analyzed using Microsoft Excel 2003 software. Statistical analyses and correlation analyses were performed using SPSS 17.0 statistical software.

Ethical approval: The conducted research is not related to either human or animals use.

3 Results and Discussion

3.1 Effects of different zeolite treatments on soil pH

The results showed that application of different zeolite had certain effects on soil pH (Figure 1). Application of different amounts of ordinary zeolite and nano zeolite could improve soil pH. Soil pH increases with the increase of the amount of zeolite. Compared with that of control, the pH of soils OZ1, OZ2 and OZ3 treated with ordinary zeolite increased by 0.47, 0.67 and 1.05, respectively. The pH of soils NZ1, NZ2 and NZ3 treated with nano zeolite increased by 0.73, 1.35 and 1.57, respectively. Zeolite can increase soil pH could be explained from two aspects. On the one hand, zeolite itself has a higher pH. Thus, the greater the amount of zeolite used, the greater the increase in pH. On the other hand, zeolite has very strong ion exchange ability. There are a large number of exchangeable K+, Na+, Ca2+, Mg2+ and other cations. Application of zeolite promotes the exchange of K+, Na+ and other soluble cations with H+ and Al3+ in soil, resulting in decline of hydrolyzed and metabolic acids [22]. However, soil pH with nano zeolite treatments had a greater increase than the same amount of ordinary zeolite treatments. This result could account for the fact that nano zeolite has looser skeleton structure, larger specific surface area, larger cation exchange capacities than ordinary zeolite in soil.

Figure 1 pH of soils in different zeolite treatments (Error bars indicate standard errors of 3 replicates. The different letters indicate significant difference at P<0.05, similarly hereinafter).
Figure 1

pH of soils in different zeolite treatments (Error bars indicate standard errors of 3 replicates. The different letters indicate significant difference at P<0.05, similarly hereinafter).

3.2 Effects of different zeolite treatments on the available content of Cd in soil

As can be seen from Figure 2, the use of different zeolite can reduce the content of available Cd in the soil, and the more the zeolite was applied, the greater the reduction of available Cd content. Compared with that of the control, available Cd decreased by 19.3% - 32.7% and 23.2% - 40.5% in the soil treated with ordinary zeolite (OZ1-OZ3) and nano zeolite (NZ1-NZ3), respectively. The former was significantly lower than the latter with the same amount treatments probably due to that the nano zeolite could more effectively improve soil pH than ordinary zeolite. The results show that nano zeolite could better remediate Cd-contaminated soil than ordinary zeolite.

Figure 2 Effects of application of ordinary zeolite and nano zeolite on the content of available Cd in soil.
Figure 2

Effects of application of ordinary zeolite and nano zeolite on the content of available Cd in soil.

3.3 Effects of different zeolite treatments on Cd absorption in different parts of tobacco

Table 1 shows the distribution of Cd in different parts of tobacco. The order of Cd content in tobacco is lower leaves> middle leaves> upper leaves> stems. Application of ordinary and nano zeolite could effectively reduce Cd contents in all parts of tobacco. Compared with control, application of ordinary zeolite reduced Cd content by 19.7% - 26.8%, 18.6% - 27.9%, 18.7% - 27.9% and 22.2% - 30.2% in upper, middle and lower leaves and stems of tobacco, respectively; application of nano zeolite reduced Cd content by 24.7% - 32.8%, 25.3% - 33.8%, 25.8% - 32.4% and 29.1% - 36.2% in upper, middle and lower leaves and stems of tobacco, respectively. The results show that nano zeolite could more effectively reduce Cd contents of all parts of tobacco than ordinary zeolite with the same amount of treatments.

Table 1

Effects of ordinary zeolite and nano zeolite on Cd concentrations in various tissues of tobacco plants (Error bars indicate standard errors of 3 replicates. The different letters indicate significant difference at P < 0.05, similarly hereinafter).

TreatmentsUpper leaves (mg kg-1)Middle leaves (mg kg-1)Lower leaves (mg kg-1)Stems (mg kg-1)
CK15.35±1.25 a16.95±2.56 a19.52±1.89 a8.01±0.98 a
OZ112.32±1.08 b13.82±1.81 b15.87±1.66 b6.23±0.81 b
OZ211.58±1.05 bc12.96±1.38 bc14.58±1.35 bc5.85±0.45 bc
OZ311.23±0.98 bc12.35±1.30 bc14.20±1.20 bc5.59±0.43 bc
NZ111.56±0.95 bc12.68±1.78 bc14.49±1.81 bc5.68±0.70 bc
NZ210.89±1.01 c11.97±1.56 bc13.85±1.51 c5.41±0.65 c
NZ310.32±1.05 c11.24±1.30 c13.20±1.42 c5.11±0.58 c

3.4 Correlation of soil available Cd content with soil pH and Cd content in different parts of tobacco

The correlation between soil pH under different treatments and cadmium content in different parts of tobacco with available Cd content in soils were analyzed. The results are shown in Figures 3 and 4. It was found that soil pH was negatively correlated with the content of available Cd (n=7, p<0.05). With the increase of soil pH, the content of available Cd decreased, indicating that pH is one of the important factors affecting available Cd content. Consistent with past research [23], the content of available Cd in different soils was significantly correlated with Cd content in upper, middle and lower leaves and stems of tobacco (n=7, p<0.05). The application of nano zeolite and ordinary zeolite can reduce soil available Cd content, so as to reduce the absorption of soil Cd in various parts of tobacco.

Figure 3 Relationship between pH of soils with different zeolite treatments and soil available cadmium content.
Figure 3

Relationship between pH of soils with different zeolite treatments and soil available cadmium content.

Figure 4 Relationship between soil available cadmium content and cadmium concentrations in different tissues of tobacco plants.
Figure 4

Relationship between soil available cadmium content and cadmium concentrations in different tissues of tobacco plants.

3.5 Effects of different zeolite treatments on Cd speciation in soil

The Tessier’s sequential extraction method [21] is one of the most significant methods for analyzing the forms of heavy metals in soil and sediments and has been widely used in the analysis of soil heavy metals and their toxicity and bioavailability [24,25,26]. In this method, heavy metals are divided into five forms, namely, exchangeable (EXE), carbonates-bound (CAB), organic matter bound (OM), Fe-Mn oxides bound (FMO) and residual (RES) forms.

Figure 5 shows the effect of different zeolite treatments on the transformation of Cd speciation in the soil. It can be seen from the figure that the Cd in the untreated soil CK is mainly in the EXE form, accounting for 70.5%, followed in turn by CAB (9.1%), FMO (8.3%), RES (6.5%) and OM (5.7%) of the total Cd ratio. In the soil, soil exogenous Cd was changed toward CAB, FMO, OM and RES under the action of ferromanganese di(tri)basic oxide colloid, salty ion and organic matters, indicating that soil itself has a certain self-purification capacity [27]. Water-soluble and EXE heavy metals are defined as available according to their bioavailability and can be easily absorbed by plants. Metals in FMO, CAB and OM forms are defined as potentially available and the direct provider of available heavy metals. Heavy metals in RES form are defined as unavailable. In the soil-plant system, the order of Cd bioavailability in each form is EXE>CAB>OM>FMO>RES [28]. The speciation of heavy metal Cd in soil changed significantly after applying different zeolite to the polluted soils. Application of different dosages of ordinary zeolite reduced EXE Cd by 14.9% - 24.5% while CAB Cd percentage increased by 3.5% - 5.5%, OM cadmium percentage increased by 0.8% - 1.9%, FMO Cd percentage increased by 3.2% - 6.3% and RES Cd percentage increased by 7.3% - 10.7%, respectively. Application of different dosages of nano zeolite reduced EXE Cd by 18.4% - 31.3% while CAB Cd percentage increased by 4.1% - 8.2%, OM cadmium percentage increased by 1.2% - 2.4%, FMO Cd percentage increased by 5.6% - 7.3% and RES Cd percentage increased by 7.4% - 13.3%, respectively. It can be seen that the effect of nano zeolite treatments is better than that of ordinary zeolite treatments, and the increase of CAB Cd after nano zeolite treatment NZ3 is 1.24 times higher than that after ordinary zeolite treatment OZ3. The percentage of EXE Cd decreased, while the percentages of CAB, OM, FMO and RES Cd increased, indicating that Cd speciation that is sensitive to environmental change, has higher biological activity and toxicity and can be easily absorbed by plants gradually transformed into the speciation that is stable in the environment, has less activity and toxicity and is difficult to be absorbed. The results show that the application of nano zeolite has an advantage over ordinary zeolite in stabilizing heavy metal Cd to a certain extent and reducing their bioavailability and transferability.

Figure 5 Effects of application of ordinary zeolite and nano zeolite on percentage of different speciation of cadmium in soil.
Figure 5

Effects of application of ordinary zeolite and nano zeolite on percentage of different speciation of cadmium in soil.

4 Conclusions

Tobacco pot experiment was conducted using exogenous Cd contaminated soils. The results showed that application of ordinary zeolite and nano zeolite could increase soil pH, reduce soil available Cd content, reduce Cd contents in the upper, middle and lower leaves and stems of tobacco, promote transformation of EXE Cd in the soil to CAB, FMO, OM and RES Cd. There was a significant negative correlation between soil pH and available Cd content and significantly positive correlation between soil available Cd content and Cd content in the upper, middle and lower leaves as well as the stem of tobacco. The effect of application of nano zeolite was better than that of application of ordinary zeolite in terms of increasing pH, reducing available Cd content, decreasing Cd content in various parts of tobacco as well as reducing Cd bioavailability and transferability. Therefore, application of nano zeolite has an advantage over ordinary zeolite in situ reducing and remediating Cd contaminated soils .

Acknowledgments

This study was supported by the Foundation for Tobacco Science of Changsha Tobacco Company of Hunan Province (No.CYKJ2014-01).

  1. Conflict of interest: Authors state no conflict of interest.

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Received: 2017-11-30
Accepted: 2018-04-09
Published Online: 2018-07-18

© 2018 Qiulong Hu et al., published by De Gruyter

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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  43. Mercury fractionation in gypsum using temperature desorption and mass spectrometric detection
  44. Phytosynthetic Ag doped ZnO nanoparticles: Semiconducting green remediators
  45. Epithelial–Mesenchymal Transition Induced by SMAD4 Activation in Invasive Growth Hormone-Secreting Adenomas
  46. Physicochemical properties of stabilized sewage sludge admixtures by modified steel slag
  47. In Vitro Cytotoxic and Antiproliferative Activity of Cydonia oblonga flower petals, leaf and fruit pellet ethanolic extracts. Docking simulation of the active flavonoids on anti-apoptotic protein Bcl-2
  48. Synthesis and Characterization of Pd exchanged MMT Clay for Mizoroki-Heck Reaction
  49. A new selective, and sensitive method for the determination of lixivaptan, a vasopressin 2 (V2)-receptor antagonist, in mouse plasma and its application in a pharmacokinetic study
  50. Anti-EGFL7 antibodies inhibit rat prolactinoma MMQ cells proliferation and PRL secretion
  51. Density functional theory calculations, vibration spectral analysis and molecular docking of the antimicrobial agent 6-(1,3-benzodioxol-5-ylmethyl)-5-ethyl-2-{[2-(morpholin-4-yl)ethyl] sulfanyl}pyrimidin-4(3H)-one
  52. Effect of Nano Zeolite on the Transformation of Cadmium Speciation and Its Uptake by Tobacco in Cadmium-contaminated Soil
  53. Effects and Mechanisms of Jinniu Capsule on Methamphetamine-Induced Conditioned Place Preference in Rats
  54. Calculating the Degree-based Topological Indices of Dendrimers
  55. Efficient optimization and mineralization of UV absorbers: A comparative investigation with Fenton and UV/H2O2
  56. Metabolites of Tryptophane and Phenylalanine as Markers of Small Bowel Ischemia-Reperfusion Injury
  57. Adsorption and determination of polycyclic aromatic hydrocarbons in water through the aggregation of graphene oxide
  58. The role of NR2C2 in the prolactinomas
  59. Chromium removal from industrial wastewater using Phyllostachys pubescens biomass loaded Cu-S nanospheres
  60. Hydrotalcite Anchored Ruthenium Catalyst for CO2 Hydrogenation Reaction
  61. Preparation of Calcium Fluoride using Phosphogypsum by Orthogonal Experiment
  62. The mechanism of antibacterial activity of corylifolinin against three clinical bacteria from Psoralen corylifolia L
  63. 2-formyl-3,6-bis(hydroxymethyl)phenyl benzoate in Electrochemical Dry Cell
  64. Electro-photocatalytic degradation of amoxicillin using calcium titanate
  65. Effect of Malus halliana Koehne Polysaccharides on Functional Constipation
  66. Structural Properties and Nonlinear Optical Responses of Halogenated Compounds: A DFT Investigation on Molecular Modelling
  67. DMFDMA catalyzed synthesis of 2-((Dimethylamino)methylene)-3,4-dihydro-9-arylacridin-1(2H)-ones and their derivatives: in-vitro antifungal, antibacterial and antioxidant evaluations
  68. Production of Methanol as a Fuel Energy from CO2 Present in Polluted Seawater - A Photocatalytic Outlook
  69. Study of different extraction methods on finger print and fatty acid of raw beef fat using fourier transform infrared and gas chromatography-mass spectrometry
  70. Determination of trace fluoroquinolones in water solutions and in medicinal preparations by conventional and synchronous fluorescence spectrometry
  71. Extraction and determination of flavonoids in Carthamus tinctorius
  72. Therapeutic Application of Zinc and Vanadium Complexes against Diabetes Mellitus a Coronary Disease: A review
  73. Study of calcined eggshell as potential catalyst for biodiesel formation using used cooking oil
  74. Manganese oxalates - structure-based Insights
  75. Topological Indices of H-Naphtalenic Nanosheet
  76. Long-Term Dissolution of Glass Fibers in Water Described by Dissolving Cylinder Zero-Order Kinetic Model: Mass Loss and Radius Reduction
  77. Topological study of the para-line graphs of certain pentacene via topological indices
  78. A brief insight into the prediction of water vapor transmissibility in highly impermeable hybrid nanocomposites based on bromobutyl/epichlorohydrin rubber blends
  79. Comparative sulfite assay by voltammetry using Pt electrodes, photometry and titrimetry: Application to cider, vinegar and sugar analysis
  80. MicroRNA delivery mediated by PEGylated polyethylenimine for prostate cancer therapy
  81. Reversible Fluorescent Turn-on Sensors for Fe3+ based on a Receptor Composed of Tri-oxygen Atoms of Amide Groups in Water
  82. Sonocatalytic degradation of methyl orange in aqueous solution using Fe-doped TiO2 nanoparticles under mechanical agitation
  83. Hydrotalcite Anchored Ruthenium Catalyst for CO2 Hydrogenation Reaction
  84. Production and Analysis of Recycled Ammonium Perrhenate from CMSX-4 superalloys
  85. Topical Issue on Agriculture
  86. New phosphorus biofertilizers from renewable raw materials in the aspect of cadmium and lead contents in soil and plants
  87. Survey of content of cadmium, calcium, chromium, copper, iron, lead, magnesium, manganese, mercury, sodium and zinc in chamomile and green tea leaves by electrothermal or flame atomizer atomic absorption spectrometry
  88. Biogas digestate – benefits and risks for soil fertility and crop quality – an evaluation of grain maize response
  89. A numerical analysis of heat transfer in a cross-current heat exchanger with controlled and newly designed air flows
  90. Freshwater green macroalgae as a biosorbent of Cr(III) ions
  91. The main influencing factors of soil mechanical characteristics of the gravity erosion environment in the dry-hot valley of Jinsha river
  92. Free amino acids in Viola tricolor in relation to different habitat conditions
  93. The influence of filler amount on selected properties of new experimental resin dental composite
  94. Effect of poultry wastewater irrigation on nitrogen, phosphorus and carbon contents in farmland soil
  95. Response of spring wheat to NPK and S fertilization. The content and uptake of macronutrients and the value of ionic ratios
  96. The Effect of Macroalgal Extracts and Near Infrared Radiation on Germination of Soybean Seedlings: Preliminary Research Results
  97. Content of Zn, Cd and Pb in purple moor-grass in soils heavily contaminated with heavy metals around a zinc and lead ore tailing landfill
  98. Topical Issue on Research for Natural Bioactive Products
  99. Synthesis of (±)-3,4-dimethoxybenzyl-4-methyloctanoate as a novel internal standard for capsinoid determination by HPLC-ESI-MS/MS(QTOF)
  100. Repellent activity of monoterpenoid esters with neurotransmitter amino acids against yellow fever mosquito, Aedes aegypti
  101. Effect of Flammulina velutipes (golden needle mushroom, eno-kitake) polysaccharides on constipation
  102. Bioassay-directed fractionation of a blood coagulation factor Xa inhibitor, betulinic acid from Lycopus lucidus
  103. Antifungal and repellent activities of the essential oils from three aromatic herbs from western Himalaya
  104. Chemical composition and microbiological evaluation of essential oil from Hyssopus officinalis L. with white and pink flowers
  105. Bioassay-guided isolation and identification of Aedes aegypti larvicidal and biting deterrent compounds from Veratrum lobelianum
  106. α-Terpineol, a natural monoterpene: A review of its biological properties
  107. Utility of essential oils for development of host-based lures for Xyleborus glabratus (Coleoptera: Curculionidae: Scolytinae), vector of laurel wilt
  108. Phenolic composition and antioxidant potential of different organs of Kazakh Crataegus almaatensis Pojark: A comparison with the European Crataegus oxyacantha L. flowers
  109. Isolation of eudesmane type sesquiterpene ketone from Prangos heyniae H.Duman & M.F.Watson essential oil and mosquitocidal activity of the essential oils
  110. Comparative analysis of the polyphenols profiles and the antioxidant and cytotoxicity properties of various blue honeysuckle varieties
  111. Special Issue on ICCESEN 2017
  112. Modelling world energy security data from multinomial distribution by generalized linear model under different cumulative link functions
  113. Pine Cone and Boron Compounds Effect as Reinforcement on Mechanical and Flammability Properties of Polyester Composites
  114. Artificial Neural Network Modelling for Prediction of SNR Effected by Probe Properties on Ultrasonic Inspection of Austenitic Stainless Steel Weldments
  115. Calculation and 3D analyses of ERR in the band crack front contained in a rectangular plate made of multilayered material
  116. Improvement of fuel properties of biodiesel with bioadditive ethyl levulinate
  117. Properties of AlSi9Cu3 metal matrix micro and nano composites produced via stir casting
  118. Investigation of Antibacterial Properties of Ag Doped TiO2 Nanofibers Prepared by Electrospinning Process
  119. Modeling of Total Phenolic contents in Various Tea samples by Experimental Design Methods
  120. Nickel doping effect on the structural and optical properties of indium sulfide thin films by SILAR
  121. The effect mechanism of Ginnalin A as a homeopathic agent on various cancer cell lines
  122. Excitation functions of proton induced reactions of some radioisotopes used in medicine
  123. Oxide ionic conductivity and microstructures of Pr and Sm co-doped CeO2-based systems
  124. Rapid Synthesis of Metallic Reinforced in Situ Intermetallic Composites in Ti-Al-Nb System via Resistive Sintering
  125. Oxidation Behavior of NiCr/YSZ Thermal Barrier Coatings (TBCs)
  126. Clustering Analysis of Normal Strength Concretes Produced with Different Aggregate Types
  127. Magnetic Nano-Sized Solid Acid Catalyst Bearing Sulfonic Acid Groups for Biodiesel Synthesis
  128. The biological activities of Arabis alpina L. subsp. brevifolia (DC.) Cullen against food pathogens
  129. Humidity properties of Schiff base polymers
  130. Free Vibration Analysis of Fiber Metal Laminated Straight Beam
  131. Comparative study of in vitro antioxidant, acetylcholinesterase and butyrylcholinesterase activity of alfalfa (Medicago sativa L.) collected during different growth stages
  132. Isothermal Oxidation Behavior of Gadolinium Zirconate (Gd2Zr2O7) Thermal Barrier Coatings (TBCs) produced by Electron Beam Physical Vapor Deposition (EB-PVD) technique
  133. Optimization of Adsorption Parameters for Ultra-Fine Calcite Using a Box-Behnken Experimental Design
  134. The Microstructural Investigation of Vermiculite-Infiltrated Electron Beam Physical Vapor Deposition Thermal Barrier Coatings
  135. Modelling Porosity Permeability of Ceramic Tiles using Fuzzy Taguchi Method
  136. Experimental and theoretical study of a novel naphthoquinone Schiff base
  137. Physicochemical properties of heat treated sille stone for ceramic industry
  138. Sand Dune Characterization for Preparing Metallurgical Grade Silicon
  139. Catalytic Applications of Large Pore Sulfonic Acid-Functionalized SBA-15 Mesoporous Silica for Esterification
  140. One-photon Absorption Characterizations, Dipole Polarizabilities and Second Hyperpolarizabilities of Chlorophyll a and Crocin
  141. The Optical and Crystallite Characterization of Bilayer TiO2 Films Coated on Different ITO layers
  142. Topical Issue on Bond Activation
  143. Metal-mediated reactions towards the synthesis of a novel deaminolysed bisurea, dicarbamolyamine
  144. The structure of ortho-(trifluoromethyl)phenol in comparison to its homologues – A combined experimental and theoretical study
  145. Heterogeneous catalysis with encapsulated haem and other synthetic porphyrins: Harnessing the power of porphyrins for oxidation reactions
  146. Recent Advances on Mechanistic Studies on C–H Activation Catalyzed by Base Metals
  147. Reactions of the organoplatinum complex [Pt(cod) (neoSi)Cl] (neoSi = trimethylsilylmethyl) with the non-coordinating anions SbF6– and BPh4–
  148. Erratum
  149. Investigation on Two Compounds of O, O’-dithiophosphate Derivatives as Corrosion Inhibitors for Q235 Steel in Hydrochloric Acid Solution
https://doi.org/10.1515/chem-2018-0069
Schlagwörter für diesen Artikel
Nano Zeolite; Ordinary Zeolite; Soil Cd speciation; Cd uptake; Tobacco
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Artikel in diesem Heft

  1. Regular Articles
  2. The effect of CuO modification for a TiO2 nanotube confined CeO2 catalyst on the catalytic combustion of butane
  3. The preparation and antibacterial activity of cellulose/ZnO composite: a review
  4. Linde Type A and nano magnetite/NaA zeolites: cytotoxicity and doxorubicin loading efficiency
  5. Performance and thermal decomposition analysis of foaming agent NPL-10 for use in heavy oil recovery by steam injection
  6. Spectroscopic (FT-IR, FT-Raman, UV, 1H and 13C NMR) insights, electronic profiling and DFT computations on ({(E)-[3-(1H-imidazol-1-yl)-1-phenylpropylidene] amino}oxy)(4-nitrophenyl)methanone, an imidazole-bearing anti-Candida agent
  7. A Simplistic Preliminary Assessment of Ginstling-Brounstein Model for Solid Spherical Particles in the Context of a Diffusion-Controlled Synthesis
  8. M-Polynomials And Topological Indices Of Zigzag And Rhombic Benzenoid Systems
  9. Photochemical Transformation of some 3-benzyloxy-2-(benzo[b]thiophen-2-yl)-4Hchromen-4-ones: A Remote Substituent Effect
  10. Dynamic Changes of Secondary Metabolites and Antioxidant Activity of Ligustrum lucidum During Fruit Growth
  11. Studies on the flammability of polypropylene/ammonium polyphosphate and montmorillonite by using the cone calorimeter test
  12. DSC, FT-IR, NIR, NIR-PCA and NIR-ANOVA for determination of chemical stability of diuretic drugs: impact of excipients
  13. Antioxidant and Hepatoprotective Effects of Methanolic Extracts of Zilla spinosa and Hammada elegans Against Carbon Tetrachlorideinduced Hepatotoxicity in Rats
  14. Prunus cerasifera Ehrh. fabricated ZnO nano falcates and its photocatalytic and dose dependent in vitro bio-activity
  15. Organic biocides hosted in layered double hydroxides: enhancing antimicrobial activity
  16. Experimental study on the regulation of the cholinergic pathway in renal macrophages by microRNA-132 to alleviate inflammatory response
  17. Synthesis, characterization, in-vitro antimicrobial properties, molecular docking and DFT studies of 3-{(E)-[(4,6-dimethylpyrimidin-2-yl)imino]methyl} naphthalen-2-ol and Heteroleptic Mn(II), Co(II), Ni(II) and Zn(II) complexes
  18. M-Polynomials and Topological Indices of Dominating David Derived Networks
  19. Human Health Risk Assessment of Trace Metals in Surface Water Due to Leachate from the Municipal Dumpsite by Pollution Index: A Case Study from Ndawuse River, Abuja, Nigeria
  20. Analysis of Bowel Diseases from Blood Serum by Autofluorescence and Atomic Force Microscopy Techniques
  21. Hydrographic parameters and distribution of dissolved Cu, Ni, Zn and nutrients near Jeddah desalination plant
  22. Relationships between diatoms and environmental variables in industrial water biotopes of Trzuskawica S.A. (Poland)
  23. Optimum Conversion of Major Ginsenoside Rb1 to Minor Ginsenoside Rg3(S) by Pulsed Electric Field-Assisted Acid Hydrolysis Treatment
  24. Antioxidant, Anti-microbial Properties and Chemical Composition of Cumin Essential Oils Extracted by Three Methods
  25. Regulatory mechanism of ulinastatin on autophagy of macrophages and renal tubular epithelial cells
  26. Investigation of the sustained-release mechanism of hydroxypropyl methyl cellulose skeleton type Acipimox tablets
  27. Bio-accumulation of Polycyclic Aromatic Hydrocarbons in the Grey Mangrove (Avicennia marina) along Arabian Gulf, Saudi Coast
  28. Dynamic Change of Secondary Metabolites and spectrum-effect relationship of Malus halliana Koehne flowers during blooming
  29. Lipids constituents from Gardenia aqualla Stapf & Hutch
  30. Effect of using microwaves for catalysts preparation on the catalytic acetalization of glycerol with furfural to obtain fuel additives
  31. Effect of Humic Acid on the Degradation of Methylene Blue by Peroxymonosulfate
  32. Serum containing drugs of Gua Lou Xie Bai decoction (GLXB-D) can inhibit TGF-β1-Induced Epithelial to Mesenchymal Transition (EMT) in A549 Cells
  33. Antiulcer Activity of Different Extracts of Anvillea garcinii and Isolation of Two New Secondary Metabolites
  34. Analysis of Metabolites in Cabernet Sauvignon and Shiraz Dry Red Wines from Shanxi by 1H NMR Spectroscopy Combined with Pattern Recognition Analysis
  35. Can water temperature impact litter decomposition under pollution of copper and zinc mixture
  36. Released from ZrO2/SiO2 coating resveratrol inhibits senescence and oxidative stress of human adipose-derived stem cells (ASC)
  37. Validated thin-layer chromatographic method for alternative and simultaneous determination of two anti-gout agents in their fixed dose combinations
  38. Fast removal of pollutants from vehicle emissions during cold-start stage
  39. Review Article
  40. Catalytic activities of heterogeneous catalysts obtained by copolymerization of metal-containing 2-(acetoacetoxy)ethyl methacrylate
  41. Antibiotic Residue in the Aquatic Environment: Status in Africa
  42. Regular Articles
  43. Mercury fractionation in gypsum using temperature desorption and mass spectrometric detection
  44. Phytosynthetic Ag doped ZnO nanoparticles: Semiconducting green remediators
  45. Epithelial–Mesenchymal Transition Induced by SMAD4 Activation in Invasive Growth Hormone-Secreting Adenomas
  46. Physicochemical properties of stabilized sewage sludge admixtures by modified steel slag
  47. In Vitro Cytotoxic and Antiproliferative Activity of Cydonia oblonga flower petals, leaf and fruit pellet ethanolic extracts. Docking simulation of the active flavonoids on anti-apoptotic protein Bcl-2
  48. Synthesis and Characterization of Pd exchanged MMT Clay for Mizoroki-Heck Reaction
  49. A new selective, and sensitive method for the determination of lixivaptan, a vasopressin 2 (V2)-receptor antagonist, in mouse plasma and its application in a pharmacokinetic study
  50. Anti-EGFL7 antibodies inhibit rat prolactinoma MMQ cells proliferation and PRL secretion
  51. Density functional theory calculations, vibration spectral analysis and molecular docking of the antimicrobial agent 6-(1,3-benzodioxol-5-ylmethyl)-5-ethyl-2-{[2-(morpholin-4-yl)ethyl] sulfanyl}pyrimidin-4(3H)-one
  52. Effect of Nano Zeolite on the Transformation of Cadmium Speciation and Its Uptake by Tobacco in Cadmium-contaminated Soil
  53. Effects and Mechanisms of Jinniu Capsule on Methamphetamine-Induced Conditioned Place Preference in Rats
  54. Calculating the Degree-based Topological Indices of Dendrimers
  55. Efficient optimization and mineralization of UV absorbers: A comparative investigation with Fenton and UV/H2O2
  56. Metabolites of Tryptophane and Phenylalanine as Markers of Small Bowel Ischemia-Reperfusion Injury
  57. Adsorption and determination of polycyclic aromatic hydrocarbons in water through the aggregation of graphene oxide
  58. The role of NR2C2 in the prolactinomas
  59. Chromium removal from industrial wastewater using Phyllostachys pubescens biomass loaded Cu-S nanospheres
  60. Hydrotalcite Anchored Ruthenium Catalyst for CO2 Hydrogenation Reaction
  61. Preparation of Calcium Fluoride using Phosphogypsum by Orthogonal Experiment
  62. The mechanism of antibacterial activity of corylifolinin against three clinical bacteria from Psoralen corylifolia L
  63. 2-formyl-3,6-bis(hydroxymethyl)phenyl benzoate in Electrochemical Dry Cell
  64. Electro-photocatalytic degradation of amoxicillin using calcium titanate
  65. Effect of Malus halliana Koehne Polysaccharides on Functional Constipation
  66. Structural Properties and Nonlinear Optical Responses of Halogenated Compounds: A DFT Investigation on Molecular Modelling
  67. DMFDMA catalyzed synthesis of 2-((Dimethylamino)methylene)-3,4-dihydro-9-arylacridin-1(2H)-ones and their derivatives: in-vitro antifungal, antibacterial and antioxidant evaluations
  68. Production of Methanol as a Fuel Energy from CO2 Present in Polluted Seawater - A Photocatalytic Outlook
  69. Study of different extraction methods on finger print and fatty acid of raw beef fat using fourier transform infrared and gas chromatography-mass spectrometry
  70. Determination of trace fluoroquinolones in water solutions and in medicinal preparations by conventional and synchronous fluorescence spectrometry
  71. Extraction and determination of flavonoids in Carthamus tinctorius
  72. Therapeutic Application of Zinc and Vanadium Complexes against Diabetes Mellitus a Coronary Disease: A review
  73. Study of calcined eggshell as potential catalyst for biodiesel formation using used cooking oil
  74. Manganese oxalates - structure-based Insights
  75. Topological Indices of H-Naphtalenic Nanosheet
  76. Long-Term Dissolution of Glass Fibers in Water Described by Dissolving Cylinder Zero-Order Kinetic Model: Mass Loss and Radius Reduction
  77. Topological study of the para-line graphs of certain pentacene via topological indices
  78. A brief insight into the prediction of water vapor transmissibility in highly impermeable hybrid nanocomposites based on bromobutyl/epichlorohydrin rubber blends
  79. Comparative sulfite assay by voltammetry using Pt electrodes, photometry and titrimetry: Application to cider, vinegar and sugar analysis
  80. MicroRNA delivery mediated by PEGylated polyethylenimine for prostate cancer therapy
  81. Reversible Fluorescent Turn-on Sensors for Fe3+ based on a Receptor Composed of Tri-oxygen Atoms of Amide Groups in Water
  82. Sonocatalytic degradation of methyl orange in aqueous solution using Fe-doped TiO2 nanoparticles under mechanical agitation
  83. Hydrotalcite Anchored Ruthenium Catalyst for CO2 Hydrogenation Reaction
  84. Production and Analysis of Recycled Ammonium Perrhenate from CMSX-4 superalloys
  85. Topical Issue on Agriculture
  86. New phosphorus biofertilizers from renewable raw materials in the aspect of cadmium and lead contents in soil and plants
  87. Survey of content of cadmium, calcium, chromium, copper, iron, lead, magnesium, manganese, mercury, sodium and zinc in chamomile and green tea leaves by electrothermal or flame atomizer atomic absorption spectrometry
  88. Biogas digestate – benefits and risks for soil fertility and crop quality – an evaluation of grain maize response
  89. A numerical analysis of heat transfer in a cross-current heat exchanger with controlled and newly designed air flows
  90. Freshwater green macroalgae as a biosorbent of Cr(III) ions
  91. The main influencing factors of soil mechanical characteristics of the gravity erosion environment in the dry-hot valley of Jinsha river
  92. Free amino acids in Viola tricolor in relation to different habitat conditions
  93. The influence of filler amount on selected properties of new experimental resin dental composite
  94. Effect of poultry wastewater irrigation on nitrogen, phosphorus and carbon contents in farmland soil
  95. Response of spring wheat to NPK and S fertilization. The content and uptake of macronutrients and the value of ionic ratios
  96. The Effect of Macroalgal Extracts and Near Infrared Radiation on Germination of Soybean Seedlings: Preliminary Research Results
  97. Content of Zn, Cd and Pb in purple moor-grass in soils heavily contaminated with heavy metals around a zinc and lead ore tailing landfill
  98. Topical Issue on Research for Natural Bioactive Products
  99. Synthesis of (±)-3,4-dimethoxybenzyl-4-methyloctanoate as a novel internal standard for capsinoid determination by HPLC-ESI-MS/MS(QTOF)
  100. Repellent activity of monoterpenoid esters with neurotransmitter amino acids against yellow fever mosquito, Aedes aegypti
  101. Effect of Flammulina velutipes (golden needle mushroom, eno-kitake) polysaccharides on constipation
  102. Bioassay-directed fractionation of a blood coagulation factor Xa inhibitor, betulinic acid from Lycopus lucidus
  103. Antifungal and repellent activities of the essential oils from three aromatic herbs from western Himalaya
  104. Chemical composition and microbiological evaluation of essential oil from Hyssopus officinalis L. with white and pink flowers
  105. Bioassay-guided isolation and identification of Aedes aegypti larvicidal and biting deterrent compounds from Veratrum lobelianum
  106. α-Terpineol, a natural monoterpene: A review of its biological properties
  107. Utility of essential oils for development of host-based lures for Xyleborus glabratus (Coleoptera: Curculionidae: Scolytinae), vector of laurel wilt
  108. Phenolic composition and antioxidant potential of different organs of Kazakh Crataegus almaatensis Pojark: A comparison with the European Crataegus oxyacantha L. flowers
  109. Isolation of eudesmane type sesquiterpene ketone from Prangos heyniae H.Duman & M.F.Watson essential oil and mosquitocidal activity of the essential oils
  110. Comparative analysis of the polyphenols profiles and the antioxidant and cytotoxicity properties of various blue honeysuckle varieties
  111. Special Issue on ICCESEN 2017
  112. Modelling world energy security data from multinomial distribution by generalized linear model under different cumulative link functions
  113. Pine Cone and Boron Compounds Effect as Reinforcement on Mechanical and Flammability Properties of Polyester Composites
  114. Artificial Neural Network Modelling for Prediction of SNR Effected by Probe Properties on Ultrasonic Inspection of Austenitic Stainless Steel Weldments
  115. Calculation and 3D analyses of ERR in the band crack front contained in a rectangular plate made of multilayered material
  116. Improvement of fuel properties of biodiesel with bioadditive ethyl levulinate
  117. Properties of AlSi9Cu3 metal matrix micro and nano composites produced via stir casting
  118. Investigation of Antibacterial Properties of Ag Doped TiO2 Nanofibers Prepared by Electrospinning Process
  119. Modeling of Total Phenolic contents in Various Tea samples by Experimental Design Methods
  120. Nickel doping effect on the structural and optical properties of indium sulfide thin films by SILAR
  121. The effect mechanism of Ginnalin A as a homeopathic agent on various cancer cell lines
  122. Excitation functions of proton induced reactions of some radioisotopes used in medicine
  123. Oxide ionic conductivity and microstructures of Pr and Sm co-doped CeO2-based systems
  124. Rapid Synthesis of Metallic Reinforced in Situ Intermetallic Composites in Ti-Al-Nb System via Resistive Sintering
  125. Oxidation Behavior of NiCr/YSZ Thermal Barrier Coatings (TBCs)
  126. Clustering Analysis of Normal Strength Concretes Produced with Different Aggregate Types
  127. Magnetic Nano-Sized Solid Acid Catalyst Bearing Sulfonic Acid Groups for Biodiesel Synthesis
  128. The biological activities of Arabis alpina L. subsp. brevifolia (DC.) Cullen against food pathogens
  129. Humidity properties of Schiff base polymers
  130. Free Vibration Analysis of Fiber Metal Laminated Straight Beam
  131. Comparative study of in vitro antioxidant, acetylcholinesterase and butyrylcholinesterase activity of alfalfa (Medicago sativa L.) collected during different growth stages
  132. Isothermal Oxidation Behavior of Gadolinium Zirconate (Gd2Zr2O7) Thermal Barrier Coatings (TBCs) produced by Electron Beam Physical Vapor Deposition (EB-PVD) technique
  133. Optimization of Adsorption Parameters for Ultra-Fine Calcite Using a Box-Behnken Experimental Design
  134. The Microstructural Investigation of Vermiculite-Infiltrated Electron Beam Physical Vapor Deposition Thermal Barrier Coatings
  135. Modelling Porosity Permeability of Ceramic Tiles using Fuzzy Taguchi Method
  136. Experimental and theoretical study of a novel naphthoquinone Schiff base
  137. Physicochemical properties of heat treated sille stone for ceramic industry
  138. Sand Dune Characterization for Preparing Metallurgical Grade Silicon
  139. Catalytic Applications of Large Pore Sulfonic Acid-Functionalized SBA-15 Mesoporous Silica for Esterification
  140. One-photon Absorption Characterizations, Dipole Polarizabilities and Second Hyperpolarizabilities of Chlorophyll a and Crocin
  141. The Optical and Crystallite Characterization of Bilayer TiO2 Films Coated on Different ITO layers
  142. Topical Issue on Bond Activation
  143. Metal-mediated reactions towards the synthesis of a novel deaminolysed bisurea, dicarbamolyamine
  144. The structure of ortho-(trifluoromethyl)phenol in comparison to its homologues – A combined experimental and theoretical study
  145. Heterogeneous catalysis with encapsulated haem and other synthetic porphyrins: Harnessing the power of porphyrins for oxidation reactions
  146. Recent Advances on Mechanistic Studies on C–H Activation Catalyzed by Base Metals
  147. Reactions of the organoplatinum complex [Pt(cod) (neoSi)Cl] (neoSi = trimethylsilylmethyl) with the non-coordinating anions SbF6– and BPh4–
  148. Erratum
  149. Investigation on Two Compounds of O, O’-dithiophosphate Derivatives as Corrosion Inhibitors for Q235 Steel in Hydrochloric Acid Solution
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