85
concentrations of particulate Cu were the highest, dissolved Cu in the most of
porewater samples were lower than 10 nM..
-2O
60
Elbe River
80
0
20 40 60 80
-20
0
20~
40
6O
Main River
80
0
20 40 60 80
-20
0
20
p,
!
>
40
60
Rhine River
80
0
20 40 60 80
=
0
E
.-"~ 20
.=- 40
60
80
0
river
o R
20
40
6O
80
Main River
0
20
40
60
80
Rhine River
200
400
0
200
400
0
200
400
.20
0
40
Weser River
80
Weser River
60
80
0
0
20 40 60 80
200
400
Fig. 4.43. Dissolved Cu ( +
, nM) and particulate Cu ( ~ , mg,&g) in the sediments