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The bioconcentration of zinc by Gammarus pulex (L.) and the application of a kinetic model to determine bioconcentration factors

1993; Elsevier BV; Volume: 27; Issue: 11 Linguagem: Inglês

10.1016/0043-1354(93)90132-2

1879-2448

Qin Xu, David D. Pascoe,

Pharmaceutical and Antibiotic Environmental Impacts

The bioconcentration, and subsequent elimination, of zinc by the freshwater amphipod Gammarus pulex (L.) were determined experimentally in the laboratory at five zinc exposure concentrations (0.41–2.02 mg/l). A first-order kinetic model, modified for naturally occurring trace chemicals, was then used to calculate uptake (K1) and elimination (K2) rate constants from which the bioconcentration factors (BCF) could be predicted. Good agreement was found between the recorded and predicted BCFs and it is suggested that the model could have wider use for the study of substances naturally present at trace levels within animal tissues.