() , , , , , .
. , , , .
, , . , һ () , , . , (Pb, Cd, As, Hg) . .
һ , ( ), , , , ().
[1,2,3,4,5,7,8,11,12,13,16,17], [1,2,6,10,11], [4,11,12,14] [2,3,4,5,11,13] , - [1,2,4], - [3,4,9,15,16,18]. .
25- 7DS-23. [19]. [20].
100 / [20].
7DS-23 1340 21 . -6 [23].
40 (), 2 . 20 50 50 ; 200 . 70% , , [21]. 8955 , 7DS-23 1340 3 . : , , 0 4. 11 38 55%. 60% . (- , , ) 1,2% [24]. , һ
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