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KMID : 1059519860300050465
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Journal of the Korean Chemical Society
1986 Volume.30 No. 5 p.465 ~ p.474
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Studies on Simultaneous Analysis of Organophosphorus Pesticide Residues in Crops by Gas-Liquid Chromatography (I) Extraction and Cleanup
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Kim Taek-Jae
Eo Yun-Woo
Kim Young-Sang
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Abstract
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The solvent extraction and cleanup processes for the simultaneous gas-liquid chromatographic determination of 11 kinds of organophosphorous pesticide residues in crops were investigated. The extracts dissolved with acetone were partitioned with petroleum ether after adding saturated NaCl solution. Evaporated the partitioning solvent, the residue was dissolved in methylene chloride and eluted through mixed adsorbent (1 : 2 : 4 of activated carbon, magnesia and diatomaceous earth) with methylene chloride as an eluent. The pesticides recovered were 82∼105% and the impurities were effectively removed.
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