Impact of mining and refining on the distribution and accumulation of nickel and other heavy metals in sediments of subarctic Lake Kuetsjärvi, Murmansk Region, Russia.
Research on the influence of the activities of Pechenganickel Mining and Metallurgical Company on sediment heavy-metal geochemistry of the subarctic Lake Kuetsjärvi (north-western Russia) are described. It is estimated that during 60 years of mining/refining activity, 310 t of Ni, 120 t of Cu, 14 t of Co, 19 t of Zn, 0.087 t of Cd, 0.78 t of Pb and 0.053 t of Hg have accumulated in the lake sediments. The latter can be a source of secondary pollution and represent a danger for the lake ecosystem. The sedimentation rate in the lake is estimated to be within the range of 1.5-3 mm year(-1). The average concentrations of Ni, Cu, Hg and Co in superficial sediments have increased 25, 14, 11 and 5 times, respectively in the last century.
Institute of North Industrial Ecology Problems, Kola Science Centre, Russian Academy of Sciences, 14 Fersman St., Apatity 184200, Murmansk Region, Russia.
Vladimir
V
Dauvalter
D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry*; D008669:Metallurgy; D019216:Metals, Heavy / Q000032:analysis*; D008906:Mining; D009532:Nickel / Q000032:analysis*; D012426:Russia; D014881:Water Supply
D019216:Metals, Heavy; D009532:Nickel