19
-10:
0
20
40
-I0 I'
I.
4ol;
"t
b
r
-I0
0
20
40
%.
: Mnl+(laM:
NO]" (raM)
Fet+lmM)
" 9
80
, ,
:
80
,
,"
,
0
10 20 30 40 50 0
0.2
0.4
0.6
0.8 0
0.1
0.2
0.3
0.4
.--. -10
o
2o
L)
40
~:60:
g
~
80
0,0
d
q,
9
. -
sol (raM)
0.4
0 8
12
-10
0
2O
40
60
80
0
%
-10
0
2q
9
; .
413
- .
4Nil 4 (mM)
9
d"
,
,
,
! 80
4
8
12
16 ,
III 9
t601
%% 9
i
alkalinity (meq/l)
! 801
. . . . . . .
"
0
I0 20 30 40 50
-10
0
20
40
60
80 =
0
-I0
IIii I
iii
0
20
PO;- (mM)
40
60
,
,
go
0 . |
0.2
Or3 6
h
pll
~"
7
8
-I0;
o~
"
20
40
I
60 conductivity
;
(mS/era)
*
9
0
1
2
3
Fig. 4.2. Porewater profiles in the sediments of the Neckar River at Lauffen