The determination of residues of dichlorvos and malathion in wheat grain by gas-liquid chromatography
- 1 January 1971
- journal article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 96 (1141) , 310-313
- https://doi.org/10.1039/an9719600310
Abstract
A procedure is described for the determination of malathion and dichlorvos in grain. After extraction with methanol, and clean-up on a charcoal column, if required, the pesticide residues are determined by gas-liquid chromatography on Apiezon L and butane-1,4-diol succinate columns with a phosphorus-sensitive detector.Between the concentrations of 0·25 and 10 p.p.m. both pesticides were recovered from spiked samples with between 87 and 99 per cent. efficiency.Keywords
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