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A p H‐DEPENDENT MODEL FOR THE CHEMICAL SPECIATION OF COPPER, ZINC, CADMIUM, AND LEAD IN SEAWATER
Abstract
A p H‐dependent model for the speciation of divalent Cu, Zn, Cd, and Pb ions in seawater was constructed with available and estimated thermodynamic stability constants and individual ion activity coefficients. This model was used to calculate the degree of interaction between each of the metal ions and the anions Cl−, SO 42−, HCO 3−, CO 32−, and OH− as a function of p H. Interactions between a cation and an anion were assumed to result only in the formation of complexes with coordination numbers of 1 to 4; polynuclear and mixed‐ligand complexes were not included in the model. The calculations showed the following: All four metals are complexed to a considerable extent in seawater; with the exception of Cd, the distributions of chemical species of the metals vary greatly with changes in pH; Cu interacts primarily with OH− and CO 32−, Zn with OH−, Pb with CO 32− and Cl−, and Cd with Cl−; complexes with high coordination numbers (i.e. 3 and 4) are not formed to any appreciable extent in seawater.
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Cited by
The Physical Chemistry of Seawater
Millero, F. J. (1974) · Annual Review of Earth and Planetary Sciences · doi:10.1146/annurev.ea.02.050174.000533 · Cited by 396
Krčmar, D., Tenodi, S., Grba, N., Kerkez, D., Watson, M., Rončević, S., & Dalmacija, B. (2018) · Science of The Total Environment · doi:10.1016/j.scitotenv.2017.09.283 · Cited by 124
Robbins, L. J., Lalonde, S. V., Saito, M. A., Planavsky, N. J., Mloszewska, A. M., Pecoits, E., Scott, C., Dupont, C. L., Kappler, A., & Konhauser, K. O. (2013) · Geobiology · doi:10.1111/gbi.12036 · Cited by 79
Cell surface reactivity of Synechococcus sp. PCC 7002: implications for metal sorption from seawater
Liu, Y., Alessi, D. S., Owttrim, G. W., Petrash, D. A., Mloszewska, A. M., Lalonde, S. V., Martinez, R. E., Zhou, Q., & Konhauser, K. O. (2015) · Geochimica et Cosmochimica Acta · doi:10.1016/j.gca.2015.07.033 · Cited by 61
Hydrothermal solubility of rhodochrosite, Mn (II) speciation, and equilibrium constants
Wolfram, O., & Krupp, R. E. (1996) · Geochimica et Cosmochimica Acta · doi:10.1016/s0016-7037(96)00224-4 · Cited by 32
Metadata
- Authors
- Zirino, A., & Yamamoto, S.
- Venue
- Limnology and Oceanography
- Publisher
- Wiley
- Published
- 1972-09
- Volume
- 17
- Issue
- 5
- Pages
- 661-671
- ISSN
- 0024-3590 (ISSN-L)
- 1939-5590
- OpenAlex
- W2124433191
- Cited by
- 322
- References
- 0
- FWCI
- 15.91
- Type
- journal article
- Language
- en
- Open access
- closed
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- Zirino, A., & Yamamoto, S. (1972). A p H‐DEPENDENT MODEL FOR THE CHEMICAL SPECIATION OF COPPER, ZINC, CADMIUM, AND LEAD IN SEAWATER. Limnology and Oceanography. https://doi.org/10.4319/lo.1972.17.5.0661
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