Sandimirov S.S. Catalogue of lakes in the Russian, Finnish and Norwegian Border Area. Finland, Jyvaskyla: Kopijyva Oy, 2008.

Table 29. The standard values for heavy metal concentra­ tions in foodstuffs and in fish muscle in Lake Guokalabbalat (in цд/д wet and dry weight). Standard value ( ц д / д wet weight)* Concentration in muscle ( ц д / д wet weight) Concentration in muscle ( ц д / д dry weight) Char Hg 0.5 0.07 0.28 Ni 0.5 0.19 0.80 Cu 20 0.37 1.59 Cd 0.1 0.005 0.02 Pb 1 0.04 0.17 Trout Hg 0.5 0.05 0.23 Ni 0.5 0.20 0.89 Cu 20 0.34 1.50 Cd 0.1 0.004 0.02 Pb 1 0.02 0.10 * Source: Sanitary..., 1986 Cu in liver Ni in kidneys 450 400 350 300 250 200 150 100 50 Concentration ofCu in liver (цд/д dry weight) Concentration of Ni in kidney (цд/д dry weight) Pb in muscle Hg in muscle char trout c h a r tro u t Concentration of Pbin muscle (цд/д dry weight) Concentration of Hg in muscle (цд/д dryweight) Fig. 44. Cu (liver), Ni (kidneys), Pb and Hg (muscle) concentrations in fish from Lake Guokalabbalat (цд/д dry weight). 86 Catalogue o f Lakes in the Russian, Finnish and Norwegian BorderArea