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Table 2. Concentration of Hg in water and sediments of central India
Area
Location
Site
Surface water
Sediments
Colour
pH
Conc.
Av. conc.
Colour
Conc.
Av. conc.
(ppb)
(ppb)
(ppm)
(ppm)
in pond
in pond
(in river)
(in river)
lB
Rajim
Pond
Y
8.3
2.0
Y
0.25
Mahanadi river
CL
7.6
1.4
Y
0.18
Bilaspur
Pond
YG
8.2
3.2
Y
0.29
Arpa River
CL
7.7
2.5
Y
0.22
Raipur
Urla pond-I
Y
8.6
4.1
5.6
Y
0.51
0.83
Urla pond-II
Y
8.3
6.0
(2.7)
Y
0.80
(0.26)
Urla pond-III
YG
8.2
11.3
Y
1.33
Dangania pond
YG
8.4
5.4
GY
0.85
Nayapara pond
YG
8.5
6.0
GY
0.74
Kharun river
Y
8.3
2.3
Y
0.30
Bhilai
Hudco pond
Y
8.5
4.5
YBr
0.28
Kutela bhata pond
G
8.6
2.7
Br
0.19
Luchaki pond
GY
9.0
11.3
GB
3.01
Shivnath river
CL
7.8
4.5
Y
0.34
TPP
Korba
Pond-I
YG
7.8
5.1
G
0.36
+
Pond-II
YG
7.9
6.3
G
0.34
CMB
Pond-III
YG
8.0
7.0
G
0.62
:>;
Pond-IV
YG
7.9
4.5
5.5
G
0.56
0.46
0
Husdev river
CL
7.6
2.8
(2.5)
Y
0.36
(0.32)
'"0
Ol
[
Katghora
Pond
Y
7.0
5.7
Y
0.41
~
Husdev river
CL
7.7
5.9
Y
0.27
~