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Metal accumulation in the polychaeteHediste japonicawith emphasis on interaction between heavy metals and petroleum hydrocarbons

Authors
Journal
Environmental Pollution
0269-7491
Publisher
Elsevier
Publication Date
Volume
149
Issue
1
Identifiers
DOI: 10.1016/j.envpol.2006.12.013
Keywords
  • Hediste Japonica
  • Bioconcentration Factors (Bcfs)
  • Net Accumulation Rate
  • Heavy Metal
  • Petroleum Hydrocarbons

Abstract

Abstract The accumulation of cadmium (Cd) and copper (Cu) in the polychaete Hediste japonica exposed to the mixture of Cd (or Cu) and petroleum hydrocarbons (PHCs) was investigated and compared with that exposed to single Cd (or Cu). The increased bioavailability of Cd or Cu with exposure concentrations resulted in an increase in the accumulation and net accumulation rate of Cd or Cu during single metal exposure. The net accumulation rate of Cd increased, but the net accumulation rate of Cu decreased with exposure time during single metal exposure, suggesting that H. japonica could actively regulate Cu burden in their body by inhibition of absolute uptake or promotion of excretion. The interactions between Cd (or Cu) and PHCs had complicated influences on the net accumulation rate of Cd and Cu in H. japonica under the condition of the binary mixture, which are dependent on their concentration combinations and exposure time.

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