89
In the Rhine River and Main River, Notable peaks of dissolved Pb were measured at
the sediment-water interface. In the Elbe River and Weser River, the concentrations of
porewater Zn were lower than compared to the overlying water.
-20
0
20
40
/i
6O
Elbe River
8O
0
200 400 600
-20~
01
201
4C
6(]
8(]
0
1
Main River
-20
200 400 600
\
0
+i
40
60
Rhine River
80
0
200 400 600
I
B
o ~
"~ 20
.=- 40
60
e-.
~ .
Elbe River
80
0
200 400 600
20
:I
80/
0
Main River
200 400 600
0
200 400 600
2~ '
+il w++r v+r
0
20
0
200 400 600
600
I
Weser River
801
0
200 4()0
Fig. 4.47. Dissolved Cr ( ---I--, aM) and particulate Cr ( ~ , mg/kg) in the sediments