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KMID : 0893320070220040299
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Journal of Environmental Toxicology
2007 Volume.22 No. 4 p.299 ~ p.304
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Distribution between Air-Soil Concentration of Organochlorine Pesticides
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Choi Min-Kyu
Chun Man-Young
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Abstract
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This paper was studied to investigate the equilibrium state between organochlorine pesticides (OCPs) concentration of air and soil, and to know whether soil is a secondary pollution source of OCPs in air or not. The OCPs concentration of air () and soil () is not related to molecular weight, vapor pressure () and octanol-air partition coefficient (). The slope of the regression line between soil-air partition coefficient () and scavenging coefficient () was 0.2952, which the OCPs concentration between air and soil did not reached to the equilibrium state. The soil/air fugacity quotients () of p, p’-DDT/DDD/DDE and ), which is smaller than 1, means the deposit of OCPs from air to soil. However, of heptachlor, heptachlor epoxide, , trans-nonachlor, endosulfan sulfate and , which is greater than 1, means that soil is secondary pollution source of OCPs in air.
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KEYWORD
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organochlorine pesticides (OCPs), equilibrium, soil-air partition coefficient (), scavenging coefficient (), soil/air fugacity quotients ()
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