Passive sampling devices as surrogates for evaluating bio availability of aged chemicals in soil
作者： Hiroshi Awata , Kevin A. Johnson , Todd A. Anderson
DOI: 10.1080/02772249909358845
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摘要: The fraction of a chemical available to soil‐dwelling organisms such as earthworms is not simply related the concentration that in soil determined through rigorous extraction methods. Aging one processes are known affect exposure chemicals by decreasing with time. Passive sampling devices (PSDs) potentially direct indicators for assessing bioavailability hydrophobic pesticides (and other chemicals) soil. In this study, pesticide mixture (six organochlorine including aldrin, dieldrin, endrin, lindane, heptachlor, and p,p‘‐DDT) was aged two types (sandy loam silt loam). Uptake rates maximum concentrations PSDs placed into soils were over 36 days. There general trend towards decreased uptake higher organic carbon content (both initial concentrations)...
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