Utility of π-acceptor reagents for spectrophotometric determination of sulphonamide drugs via charge-transfer complex formation
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Faten Nour El-Dien
,
Gehad Mohamed
Abstract
A simple, sensitive and accurate spectrophotometric method for the determination of sulphonamides (sulphamethoxazole (SMZ), sulphaguanidine (SGD), sulphaquinoxaline sodium (SQX), sulphametrole (SMR), and sulphadimidine sodium (SDD)) has been developed. The charge-transfer reactions between sulphonamides as n-electron donors and 7,7,8,8-tetracyanoquinodimethane (TCNQ), 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), and 2,5-dichloro-3,6-dihydroxy-1,4-benzoquinone (chloranilic acid, p-CLA) as π-acceptors resulting in highly coloured complexes were studied. Experimental conditions for these CT reactions were carefully optimised. Beer’s law is valid over the concentration ranges from 4–280 µg mL−1, 4–260 µg mL−1, 4–200 µg mL−1, and 4–200 µg mL−1 of SMZ, SGD, SQX, and SDD using DDQ reagent, respectively. While the calibration curves are linear in the concentration ranges from 4–180 µg mL−1, 4–80 µg mL−1, 4–60 µg mL−1, 4–180 µg mL−1, and 4–60 µg mL−1 of SMZ, SGD, SQX, SMR, and SDD, respectively, using TCNQ reagent and from 4–380 µg mL−1 and 4–300 µg mL−1 of SQX and SDD, respectively, using p-CLA reagent, respectively. Different analytical parameters, namely molar absorptivity (ε), standard deviation, relative standard deviation, correlation coefficient, limit of detection, and limit of quantification, were calculated. The results obtained by the proposed methods are in good agreement with those obtained by the official method as indicated by the percent recovery values.
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© 2009 Institute of Chemistry, Slovak Academy of Sciences
Articles in the same Issue
- Utilization of solid phase spectrophotometry for the determination of trace amounts of copper using 5-(2-benzothiazolylazo)-8-hydroxyquinoline
- Analysis of spectinomycin in fermentation broth by reversed-phase chromatography
- An amperometric sensor for uric acid based on ordered mesoporous carbon-modified pyrolytic graphite electrode
- Utility of π-acceptor reagents for spectrophotometric determination of sulphonamide drugs via charge-transfer complex formation
- A graph theoretical approach to the effect of mutation on the flexibility of the DNA binding domain of p53 protein
- Aquaculture by-product: a source of proteolytic enzymes for detergent additives
- Effect of anthraquinone on brightness value and crystalline structure of pulp during soda processes
- Selection of a method for determination of activity of pectinolytic enzymes in berry fruit materials
- Study on polymeric micelles of poly(γ-benzyl l-glutamate)-graft-poly(ethylene glycol) copolymer and its mixtures with poly(γ-benzyl l-glutamate) homopolymer in ethanol
- Synthesis and characterization of mesoporous molecular sieves
- Growth mechanism and characterization of ZnO nano-tubes synthesized using the hydrothermal-etching method
- Novel use of silicon nanocrystals and nanodiamonds in biology
- Fluoride anion sensing using colorimetric reagents containing binaphthyl moiety and urea binding site
- Spectrophotometric methods for sertraline hydrochloride and/or clidinium bromide determination in bulk and pharmaceutical preparations
- Study of physicochemical properties-antitubercular activity relationship of naphthalene-1,4-dione analogs: A QSAR approach
- Spectroscopic study of protonation of oligonucleotides containing adenine and cytosine
- Rheological properties of doughs with buckwheat and quinoa additives
- Synthesis and isolation of methyl bismuth cysteine and its definitive identification by high resolution mass spectrometry
Articles in the same Issue
- Utilization of solid phase spectrophotometry for the determination of trace amounts of copper using 5-(2-benzothiazolylazo)-8-hydroxyquinoline
- Analysis of spectinomycin in fermentation broth by reversed-phase chromatography
- An amperometric sensor for uric acid based on ordered mesoporous carbon-modified pyrolytic graphite electrode
- Utility of π-acceptor reagents for spectrophotometric determination of sulphonamide drugs via charge-transfer complex formation
- A graph theoretical approach to the effect of mutation on the flexibility of the DNA binding domain of p53 protein
- Aquaculture by-product: a source of proteolytic enzymes for detergent additives
- Effect of anthraquinone on brightness value and crystalline structure of pulp during soda processes
- Selection of a method for determination of activity of pectinolytic enzymes in berry fruit materials
- Study on polymeric micelles of poly(γ-benzyl l-glutamate)-graft-poly(ethylene glycol) copolymer and its mixtures with poly(γ-benzyl l-glutamate) homopolymer in ethanol
- Synthesis and characterization of mesoporous molecular sieves
- Growth mechanism and characterization of ZnO nano-tubes synthesized using the hydrothermal-etching method
- Novel use of silicon nanocrystals and nanodiamonds in biology
- Fluoride anion sensing using colorimetric reagents containing binaphthyl moiety and urea binding site
- Spectrophotometric methods for sertraline hydrochloride and/or clidinium bromide determination in bulk and pharmaceutical preparations
- Study of physicochemical properties-antitubercular activity relationship of naphthalene-1,4-dione analogs: A QSAR approach
- Spectroscopic study of protonation of oligonucleotides containing adenine and cytosine
- Rheological properties of doughs with buckwheat and quinoa additives
- Synthesis and isolation of methyl bismuth cysteine and its definitive identification by high resolution mass spectrometry
