Forms of metals in the littoral sediments in Kandalaksha Bay of the White Sea in the Russian Arctic

被引：0
|
作者：
S. E. Koukina
G. A. Korneeva
T. A. Bek
机构：
[1] Russian Academy of Sciences,Shirshov Institute of Oceanology
[2] Moscow State University,White Sea Biological Station
来源：
Oceanology | 2010年 / 50卷
关键词：
Bottom Sediment; Sedi Ments; Littoral Sediment; Marginal Filter; Small Inlet;
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摘要：
According to the results of the comparative study performed of the littoral sediments sampled in small inlets of Kandalaksha Bay (the White Sea in the Russian Arctic), the metals (Fe, Mn, Cu, Zn, Pb, Cr, and Li) occur mainly in a biogeochemical-stable mineral-incorporated form, which comprises 77–99% of the total metal content. The ratio of the liable form, which is easily extracted by a weak acid, is on average 3.2% for the total Fe, 2.0% for Mn, 1.7% for Cr, 5.6% for Pb, 5.8% for Zn, 6.5% for Cu, and is negligible for Li. The concentrations of the most studied trace metals are below the threshold level according to the environmental quality guidelines (the sediment analysis). The ratio of the metal forms evidences the natural origin of the elevated concentrations of both Zn and Cr in the sediments.
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页码：877 / 883
页数：6
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