Copper(II) carbonate complexation in seawater |
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| Authors: | Robert H Byrne William L Miller |
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| Institution: | Marine Science Department, University of South Florida, St. Petersburg, Florida 33701 USA |
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| Abstract: | Cupric carbonate and cupric bicarbonate complexation constants were determined in natural seawater and in a variety of synthetic media. The formation constants of CuHCO3+, CuCO30 and Cu(CO3)22? at 25°C and zero ionic strength are: log βH0 = 1.8, log β10 = 6.82 and log β02 = 10.6. Formation constants of these species appropriate to 0.7 molar ionic strength and 25°C are log βH ～- 1, log β1 = 5.73, log β2 = 9.3. Our results indicate that the inorganic speciation scheme of Cu(II) in seawater is dominated by CuCO30 and that the ternary species, CuCO3OH?, is of substantial importance. |
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