A field comparison of two methods for the determination of copper complexation: Bacterial bioassay and fixed-potential amperometry |
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| Authors: | Janet G Hering William G Sunda Randolph L Ferguson Francois MM Morel |
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| Abstract: | Complexation of copper added to seawater was determined by bacterial bioassay and fixedpotential amperometry. Consistent results were obtained by these two fundamentally different methods. The results of this study support the validity of both techniques and the field applicability of fixed-potential amperometry.The intercomparison studies were performed on samples collected at the N.Y.C. sewage sludge dumpsite and in relatively unpolluted coastal waters. In this limited study, the calculated free cupric ion concentrations at ambient total copper concentrations were similar at both sites. |
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