title: Heavy metal pollution in sediments of the Pasvik River drainage.
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.
authors.affiliation: Institute of the North Industrial Ecology Problems, Kola Science Centre, Russian Academy of Sciences, Apatity, Murmansk region. vladimir@.inep.ksc.ru
authors.forename: V
authors.initials: V
authors.lastname: Dauvalter
authors.forename: S
authors.initials: S
authors.lastname: Rognerud
mesh_terms: D004784:Environmental Monitoring; D019015:Geologic Sediments; D007221:Industry; D019216:Metals, Heavy / Q000032:analysis*; D012426:Russia; D012989:Soil Pollutants / Q000032:analysis*; D014865:Waste Disposal, Fluid
chemical_list: D019216:Metals, Heavy; D012989:Soil Pollutants