Abstract
An analytical method for residual quantity of Captan, Difolatan, and Morestan was investigated by a gas chromatograph with a flame photometric detector. Good separation of these and organophosphorus pesticides was obtained by 5% DC-200 column. Further, the relative response ratios to Parathion (Rp/√(Rs) were measured and found useful for identification of these agricultural pesticides. Residues of these pesticides were extracted with benzene, the extract was concentrated, cleaned up by Florisil column chromatography, and analyzed by S mode of flame photometric detector. The recoveries of the pesticides from fortified vegetables and fruits were from 81% to 115%.
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