92
4.4.2 L a k e Constance (Uttwil)
Organic carbon in the sediments of the Lake Constance was only 2.5% compared to
-20
-20
20
"
40
~
61)
M, 2. (~M)
80
o i
l'o .
2O
0
20 "
40 ".
60
"
NO~ (pM)
80
,
.
9
.
,
0
20 40 60
-20
0
80
2ol 9
4o! ""%
611
9
Fe2+(pM)
"
80
-20
!o
20
40
0
1'04 j" (pM)
20 40 60 80 I00
-2o I
O i
20
40
60
SO
0
w
alkalinity (meq/l)
-20
OI ,, .~,.,
201
540
u u 9
60
9
DOC (raM)
80
o
i
i
-20
0
O:
20
,
40 9
6O
8O
-200 -I00 0
I
Eh (my)
2: I ;
pl-i
!oo 200 6
~
a
9
Fig. 4.50. Porewater profiles in the sediments of Lake Constance (Uttwil)