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KMID : 1059519850290050496
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Journal of the Korean Chemical Society
1985 Volume.29 No. 5 p.496 ~ p.502
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Studies on the Simultaneous Analysis of Organochlorine Pesticide Residues by Gas-Liquid Chromatography (I). Solvent Extraction and Cleanup of Pesticides
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Kim Taek-Jae
Park Song-Ja
Kim Young-Sang
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Abstract
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The solvent extraction and cleanup processes for the simultaneous gas-liquid cliromatographic determination of 16 kinds of organochlorine pesticide residues were investigated. The pesticides were extracted out from-various crops with the aqueous acetone solution acidified (pH < 1.5) by adding conc. H3PO4. Most of the pesticides were partitioned from the solution with petroleum ether. Evaporated the extracting solvent, the residues were dissolved in ethylether-petroleum ether (6 : 94) eluent and eluted through the Florisil column activated at 650℃ for 2.5hrs. The extraction efficiency was over 94% and impurities were effectively removed by the column chromatography.
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