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KMID : 1024520060150030229
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Journal of the Environmental Sciences
2006 Volume.15 No. 3 p.229 ~ p.236
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Contemporary Organic Contamination Levels in Digested Sewage Sludge from Treatment Plants in Korea : (3) Organophosphorus Insecticides
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Hong Gi-Hoon
Lee Kang-Young
Chung Chang-Soo
Lee Hyun-Kyung
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Abstract
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Organophosphorus pesticides (OPPs) contents in the sewage sludge derived from the residential and industrial areas were determined in order to characterize contemporary organic contamination levels as a part of the ongoing development of the environmentally sound sewage sludge management strategy in Korea. OPPs were extracted from freeze-dried sludges in a ultrasonic extractor. The extracts were cleaned-up by florisil column and subsequently fed into gas chromatograph/nitrogen phosphorus detector (GC/NPD) for determining OPP contents. Diazinon, dimethoate, disulfoton, EPN, malathion, methyl parathion, parathion, phorate and sulfotep were present in the appreciable amount in the domestic sewage sludges. The sum of the 9 OPPs in the sewage sludge varied from 534.8 to 15552.1 , dry wt..
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KEYWORD
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OPPs(organophosphorus pesticides), Sewage sludge, Gas Chromatography/Nitrogen Phosphorus Detector
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