Thin layer chromatography of parathion as paraoxon with cholinesterase inhibition detection.

Kumar, N. V. N. and Visweswariah, K. and Majumder, S. K. (1976) Thin layer chromatography of parathion as paraoxon with cholinesterase inhibition detection. Journal of the Association of Official Analytical Chemists, 59 (3). 641-643, 18 ref..

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Abstract

A simple, sensitive, and rapid method is described for the quantitative estimation of ng amounts of parathion (0,0-diethyl 0-p-nitrophenyl phosphorothioate) as paraoxon (0,0-diethyl 0-p-nitrophenyl phosphate) on thin layer chromatograms. Samples tested included cauliflower and paddy grain. Paraoxon is detected by inhibition, using p-nitrobenzenediazonium fluoroborate as the chromogenic reagent. This chromogenic reagent is more sensitive than Fast Blue B or indoxyl acetate; 0.1 ng may be detected and amounts from 5 to 50 ng may be estimated. The method is a viable alternative to GC analysis for parathion.

Item Type:	Article
Uncontrolled Keywords:	THIN-LAYER-CHROMATOGRAPHY; foods, parathion residues detn. in; RICE-; parathion residues detn. in rice; CAULIFLOWERS-; parathion residues detn. in cauliflowers; PARATHION-
Subjects:	500 Natural Sciences and Mathematics > 04 Chemistry and Allied Sciences > 26 Pesticide Chemistry 500 Natural Sciences and Mathematics > 04 Chemistry and Allied Sciences > 06 Chromatography
Divisions:	Food Protectants and Infestation Control
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	14 Jul 2016 10:21
Last Modified:	14 Jul 2016 10:21
URI:	http://ir.cftri.res.in/id/eprint/7090

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