90
In the Rhine River sediments, the concentrations of particulate Cd were 21 mg/kg
between 60 and 80 cm depth, 9 times higher compared to the surface layer. In other
river sediments, Cd concentrations were lower than 10 mg/kg (Fig. 4.46).
o%
20
0
ElbeRiver
20 40 60 80 100
2o0
40
60
M ~ n R i v e r
80
0 20 40 60 80 1130
-20
0
20
40
60
80
Rhine River
0 20 40 60 80 1130
=
0
E
"o 20
.=- 40
60
80
0
10
20
30
:f
801
0
M ~ n R i v e r
10
20
30
River
0
10
20
30
-20
0
20
40
60
80,
9
0
Weser River
20 40 60 sb ioo
30
]
Weser River
801
0
I0
2'0
Fig. 4~.48. Dissolved Co ( -!1--, nM) and paniculate Co ( ~ , mg/kg) in the sediments