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The loss of cadmium and zinc from sea water during accumulation experiments its implication on toxicity threshold concentrations


, : The loss of cadmium and zinc from sea water during accumulation experiments its implication on toxicity threshold concentrations. Marine Pollution Bulletin 12(2): 47-50

Loss of Cd and Zn from solutions contained in glass and polystyrene vessels was determined at different metal concentrations (0.2-3 .mu.g/ml). A substantial amount (37%) of Cd was lost after 15 days, while 4% Zn was lost after 50 h. It was stressed that interpretation of graphs, calculations and deductions could not be made on the basis of spiking amounts alone. In marine animal accumulation experiments, precontaminated apparatus should be used and the fate of metals for each experiment monitored separately. These precautions were omitted in 62% of all papers dealing with metal pollution published by 1 serious biological journal in 1979. This reduced the value of reported results and conclusions. Many earlier papers and reviews reporting acute toxicity concentrations should be viewed with extreme caution.

Accession: 006712141

DOI: 10.1016/0025-326x(81)90258-7

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