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Environmental fate & pathways

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A study to determine the bioconcentration of 1,2-dichloroethane in bluegill sunfish (Lepomis macrochirus) was conducted with the nominal concentration of 100 µg test item/L under flow-through conditions using 14C labelled material. An untreated control was run in parallel. The uptake phase was 14 days, the depuration phase lasted 7 days. Fish and water samples were taken at the same time and analysed for radioactivity and 1,2-dichloroethane to derive the uptake and depuration constants as well as the bioconcentration factor in the state of equilibrium between uptake and elimination. As a total result of the study, the BCF of 1,2-dichloroethane can be stated with BCF = 2.