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Heavy metal pollution in sediments of the Pasvik River drainage

Authors
Journal
Chemosphere
0045-6535
Publisher
Elsevier
Publication Date
Volume
42
Issue
1
Identifiers
DOI: 10.1016/s0045-6535(00)00094-1
Keywords
  • Lake Sediments
  • Heavy Metals
  • Degree Of Contamination
  • Håkanson'S Risk Index

Abstract

Abstract The purpose of this paper is to study the regional impacts of heavy metals (Ni, Cu, Co, Zn, Cd, Pb, Hg) on the watershed of the Pasvik River. On the basis of sediment investigations at 27 stations of the watershed, background concentrations of the heavy metals, vertical distribution of heavy metals in sediments, heavy metal concentrations in surface sediments, contamination degree, and risk index were determined. The atmospheric emissions of Ni, Cu, Co, Zn, Cd and Hg from the smelters and waste waters from tailing dams and mines of the Pechenganickel Company are likely to be the main sources of increasing concentrations observed in recent sediments of the lower river reaches. Lead showed a different pattern from the other heavy metals—increasing Pb concentrations in the upper sediment layers towards the Norwegian side.

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