Table 5. Average, range and std. dev. of concentration Hg and other elements in sediments in central India
Area
Type of
No. of
Concentration of elements (ppm)
sediment
sediment
Fe
Mn
Cr
Co
Ni
Zn
Cu
Cd
Pb
Tl
Mg
IB
R
4
a
10500
210.6
28.2
4.8
36.4
34.7
12.4
0.31
4.34
3.83
0.26
b
9600-11 400
180-241
25.4-31.6 4.6-4.9
32.6-40.6 24.4-47.3
11.7-13.0 0.28-0.35 4.28-4.41 3.41-4.36 0.21-0.31
c
770
25.0
2.6
0.09
3.35
9.7
0.65
0.03
0.06
0.39
0.04
P
10
a
21 000
400.7
35.6
10.1
50.8
45.4
17.6
0.14
13.51
5.67
0.82
b
8900-23 360
296-486
29.0-42.8 8.1-12.1 45.3-56.5 36.5-57.2 10.6-22.5 0.07-0.18
10.8-15.52 3.34-7.89 0.73-0.89
c
1542
69.8
5.0
1.35
3.76
6.5
3.9
0.04
1.5
1.5
0.05
TPB
R
2
a
9360
45.0
11.4
1.5
12.5
32.1
10.6
0.35
0.53
1.80
0.32
+ CMB
b
8980-9420
42-48
10.8-12.0 1.5-1.6
12.2-12.8 30.4-33.8
10.5-10.7 0.35-0.36 0.51-0.54 1.72-1.87 0.32-0.33
c
3.11
4.24
0.85
0.07
0.42
2.4
0.14
0.007
0.02
0.11
0.007
P
5
a
16500
72.6
12.6
1.8
16.8
52.8
14.4
0.15
0.60
3.21
0.46
b
13 000-18 500
64.2-86.4 9.8-15.5
1.1-2.5
12.2-19.3 43.4-61.7 9.8-17.4
0.11-0.19 0.54-0.65
3.12-3.34 0.44-0.49
c
2179.4
9.3
2.4
0.51
2.82
6.85
3.0
0.03
0.04
0.09
0.02
IMB
R
5
a
11 600
85.7
17.7
2.7
18.6
4.8
3.4
0.20
4.81
4.52
2.50
b
10 700-12 800
71.7-99.3 10.1-26.2
2.2-3.0
11.8-27.7 4.6-5.0
3.0-3.7
0.14-0.24 4.35-5.20 3.71-5.03 2.32-2.64
c
924.6
11.6
7.4
0.3
6.1
0.2
0.3
0.04
0.34
0.51
0.12
P
5
c
21 000
92.4
25.0
4.9
20.5
5.2
4.1
0.13
4.60
4.83
3.35
b
19 500-23 800 64.7-124.3 21.0-30.2 4.2-5.3
14.2-29.7 4.5-5.6
3.6-4.6
0.10-0.17 4.30-4.92 4.52-5.28 3.26-3.43
c
1856
21.9
3.6
0.43
5.9
0.45
0.4
0.03
0.3
0.3
0.07
a
= average concentration; b
= range; c
= standard deviation
<±>; IB
= industrial belt; TPB
+ CMB
= thermal power plant
+ coal mine belt, 1MB
= iron mineral belt;
R
= river; P
= pond.