Sandimirov S. Pollution of the Sediments of the Paz River basin / In State of the environment in the Norwegian, Finnish and Russian border area. The Finnish Environment. Finland, Jyvaskyla: Kopijyva Oy. 2007, №6, 98p.

Table 11. Background concentrations o f heavy metals and As (^g/g, dry weight) in sediment cores o f the investigated Finnish lakes Lake Analysis* Layers, cm Cu Ni Zn Co Cd Pb As Lampi 222 J.Mannio 29 - 30 147 13 100 - 0.36 6.4 1.43 Aittojarvi RF 28 - 30 69 23 64 4.8 0.11 6.1 - Aittojarvi FF 28 - 30 74 22 58 4.0 0.25 7 0.96 Mellalompolo RF 28 - 30 43 17 69 6.9 0.10 4.6 - Mellalompolo FF 28 - 30 72 21 86 5 0.37 8.9 1.3 Nitsijarvi J.Mannio 30 - 32 69.2 30 120 - 0.39 8.7 1.49 Nammijarvi FF 38 - 40 350 53 83 9 0.37 3.9 1.8 Inari Vasikanselka RR 21 - 22 51 32 90 13 0.21 7.0 - Inari Vasikanselka FF 38 - 40 52 33 78 9 0.26 9.1 2.3 Kantojarvi RR 13 - 14 38 19 78 13.6 0.15 3.6 - Kantojarvi RF 18 - 20 30 15 46 9.8 0.08 1.1 - Kantojarvi FR 9 - 10 41 15 67 8 0.26 6.4 1.4 Kantojarvi FF 18 - 20 44 16 69 11 0.25 1.8 1.0 Suovaselkajarvi RR 23 - 24 40 13 32 6.0 0.09 1.1 - Suovaselkajarvi RF 18 - 20 24 7 22 3.0 0.08 3.1 - Suovaselkajarvi FR 18 - 20 34 12 29 3.0 0.2 5.1 0.75 Suovaselkajarvi FF 23 - 24 45 15 38 5.0 0.2 1.4 0.68 Sierramjarvi J.Mannio 28 - 30 16 14 78 - 0.37 6.3 0.8 Pahtajarvi J.Mannio 28 - 30 22.5 7.36 25.9 - 0.36 4.73 1.46 Kivijarvi FF 38 - 40 27 12 84 16 0.28 1.9 0.93 Average 64 19 66 8 0.24 4.9 1.2 Min 16 7 22 3 0.08 1.1 0.7 Max 350 53 120 16 0.39 9.1 2.3 Standard deviation 73 11 27 4 0.11 2.6 0.5 Average** 25 17 75 17 0.23 8.0 - Min** 5 3 18 3 0.10 2 - Max** 74 53 168 234 0.9 26 - Standarddeviation** 27 10 38 13 0.18 4.6 - * J.Mannio - data of Dr. Jaakko Mannio; RR - Russian analysis, Russian corer; RF - Russian analysis, Finnish corer; FR - Finnish analysis, Russian corer; FF - Finnish analysis, Finnish corer; ** - background concentrations of heavy metals in sediments of 42 small lakes in Kuusamo, North-Eastern Finland (Myllymma, Murtoniemi, 1986) 36