Table 3. Coefficient of concentration of trace elements in soils
№
п/п
Indicators of the content of chemical elements in the soil, mg/kg
Cu
Zn
Sr
Zr
Pb
Cr
Sn
V
Ti
Fe
1
3.7
3.6
0.95
1.71
1.64
1.4
1.74
1.09
2.34
3.7
2
4.55
8.72
1.03
1.46
1.71
2
0.78
1.45
2.84
4.55
3
1.15
5.88
0.9
1.52
1.69
2.06
1.88
1.25
1.38
1.15
4
-
3.4
1.03
1.39
1.45
11
1.59
1.31
1.46
-
5
2.65
12.76
0.68
1.18
1.33
-
1.35
1.24
1.09
2.65
6
4.8
2.84
-
0.23
-
2.4
-
0.16
10.85
4.8
7
2.25
6.28
1.12
1.32
1.8
1.56
1.26
1.19
2.1
2.25
8
1.05
2.16
0.63
0.54
1.07
-
-
0.80
0.96
1.05
The choice of chemicals for assessing the risk of contamination of landscapes is
conducted taking into account the specifics of sources of pollution, the significance of
pollutants in accordance with the class of danger and MPC. Taking into consideration
also the nature of land use (settlements, agricultural lands, recreational areas).
P
j
=∑
·
where k
c
– coefficient of element concentration; і – index of hazard of a chemical
element (Table 4).
The formula k
с
∙ i is calculated for each element separately, and the sum of these
products (for different elements) is an indicator of the intensity of pollution Pj.
Table 4. The hazard index of heavy metals
Category
Heavy metals
The hazard index, Mi
І
Pb, Cd, Hg, F, Zn, As, Se,
4.1 and more
ІІ
Cu, Co, Cr, Ni, Mo, Sb, B, Mn
2.6 – 4
ІІІ
V, Ba, Mn, Sr, AI
0.1 – 2.5
The results of calculations are shown in the table 5.
Table 5. Indicators of pollution intensity
№
п/п
Indicators of the content of chemical elements in the soil, mg/kg
Cu
Zn
Sr
Zr
Pb
Cr
Sn
V
Ti
Fe
1
14.8
14.76
2.37
4.27
6.72
5.6
4.35
2.73
5.85
14.8
2
18.2
35.75
2.57
3.65
7.01
8
1.95
3.63
7.1
18.2
3
4.6
24.1
2.25
3.8
6.93
8.24
4.7
3.13
3.45
4.6
4
-
13.94
2.57
3.47
5.94
44
3.97
3.28
3.65
-
5
10.6
52.32
1.7
2.95
5.45
-
3.37
3.1
2.73
10.6
6
19.2
11.64
-
0.57
-
9.6
-
0.4
27.13
19.2
7
9
25.75
2.8
3.3
7.38
6.24
3.15
2.98
5.25
9
8
4.2
8.86
1.57
1.35
4.39
-
-
2
2.4
4.2
According to the estimation scale of ecological hazard of pollution of landscapes,
we define the category of intensity of soil contamination (Table 6).
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