Copper Speciation in Marine Waters
The properties of a naturally occurring copper-organic complex have been examined. Two binding sites for copper were found and their protonation and copper-binding properties characterized. The parameters thus obtained have been used to develop a pH-dependent speciation model for dissolved copper in seawater. The resulting predictions of free and labile copper concentrations are examined and discussed with respect to copper’s toxicity, adsorption, and voltammetric analysis.
KeywordsHumic Acid Stability Constant Fulvic Acid Copper Speciation Copper Binding
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- 1.Harvey, G.R., D.A. Boran, L.A. Chesal and J.M. Tokar, 1981: The structure of marine fulvic and humic acids. Mar. Chem., submitted.Google Scholar
- 9.Mills, G.L., A.K. Hanson, Jr., J.G. Quinn, W.R. Lamela and N.D. Chasteen, 1981: Chemical studies of copper-organic complexes isolated from estuarine waters using C18 reverse-phase liquid chromatography. Mar. Chem., submitted.Google Scholar
- 10.Nordstrom, D.K. and 18 others, 1979: Comparison of computerized chemical models for equilibrium calculations in aqueous systems, in: “Chemical Modeling in Aqueous Systems”, E.A. Jenne, ed., American Chemical Society Symposium Series 93, Washington, D.C.Google Scholar
- 15.Kester, D.R., R.W. Zuehlke, A.J. Paulson and R.H. Byrne, Jr., 1981: Inorganic speciation of copper in seawater. To be submitted.Google Scholar
- 17.Mills, G.L., 1981: An investigation of dissolved copper-organic complexes in estuarine and coastal waters using reverse-phase liquid chromotography. Ph.D. thesis, University of Rhode Island.Google Scholar
- 18.Schnitzer, J., 1976: The chemistry of humic substances, in: “Environmental Biogeochemistry”, Vol. 1, J.S. Nsriagu, ed., Ann Arbor Science Publishers.Google Scholar
- 20.Huntsman, S.A. and W.G. Sunda, 1980: The role of trace metals in regulating phytoplankton growth with emphasis on Fe, Mn, and Cu, in: “The Physiological Ecology of Phytoplankton”, I. Morris, ed., Blackwell Scientific Publishers, Oxford.Google Scholar
- 23.Sunda, W.G. and P.A. Gillespie, 1979: The response of a marine bacterium to cupric ion and its use to estimate cupric ion activity in seawater. J. Mar. Res., 37 (4), 761–777.Google Scholar
- 25.Sunda, W.G. and R.L. Guillard, 1976: The relationship between cupric ion activity and the toxicity of copper to phytoplankton. J. Mar. Res ., 34 (4), 511–529.Google Scholar
- 30.Zuehlke, R.W. and D.R. Kester, 1981: Ultraviolet spectroscopic determination of the stability constants for copper carbonate and bicarbonate complexes up to the ionic strength of seawater. Mar. Chem., submitted.Google Scholar