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Hydrobiological Journal
SJR: 0.227 SNIP: 0.575 CiteScore™: 0.24

ISSN 印刷: 0018-8166
ISSN オンライン: 1943-5991

Hydrobiological Journal

DOI: 10.1615/HydrobJ.v34.i4-5.220
pages 212-225

Distribution of Ionized Cobalt between the Components of Model Water Ecosystems

A. Ye. Vasyukov
Institute of Monocrystals National Academy of Sciences of Ukraine, Kiev, Ukraine
B. S. Sverdlova
Research Institute of Water Conservation, Khar'kov, Ukraine
A. Yu. Milanich
Research Institute of Water Conservation, Khar'kov, Ukraine

要約

The distribution of cobalt ions in model ecosystems containing water from the Dnieper-Donbass Channel, phytoplankton, and benthic sediment was studied. The cobalt concentration in water decreased as a result of the formation of complexes with dissolved organic matter and, to a lesser extent and at a lower rate, of its absorption by phytoplankton. The distribution was significantly changed in the presence of other metals: when added in combination with copper and cobalt, cobalt remained unbound and its concentration was nearly constant. Benthic sediment absorbed cobalt ions at a gradually decreasing rate until its concentration became lower than that detectable polarographically. Equations approximating the distribution of cobalt ions in the model water ecosystems were obtained, and their coefficients were calculated.


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