3 Isotope Geochemistry of River Water
37
O~
,2<
O
E
E
E
"1o
O ~J
Z
3000
2000
1000
0
!
!
6.2
6.6
7.0
7../.
pH
Fig. 3.5. Nd concentration of filtered river water as a function of pH. (Elderfield et al.
1990)
0
,tO
ILl
LLI
er
4"o
}...
.m
'4.-ILl
LLI
,.o[
0.9
1.0
08
0.6
2pro
t
I
I
I
I
|
!
I
I
I
La Ce
Nd
Sm Eu Gd
Dy
Er
Yb Lu
Fig. 3.6. The influence of suspended load and colloids on the REE concentrations of river
water. (Elderfield et al. 1990)
Not just the pH but also the presence of colloidal phases in suspension can control
the concentration of the rare earths in river water (Goldstein et al, 1984; Sholkovitz
37
O~
,2<
O
E
E
E
"1o
O ~J
Z
3000
2000
1000
0
!
!
6.2
6.6
7.0
7../.
pH
Fig. 3.5. Nd concentration of filtered river water as a function of pH. (Elderfield et al.
1990)
0
,tO
ILl
LLI
er
4"o
}...
.m
'4.-ILl
LLI
,.o[
0.9
1.0
08
0.6
2pro
t
I
I
I
I
|
!
I
I
I
La Ce
Nd
Sm Eu Gd
Dy
Er
Yb Lu
Fig. 3.6. The influence of suspended load and colloids on the REE concentrations of river
water. (Elderfield et al. 1990)
Not just the pH but also the presence of colloidal phases in suspension can control
the concentration of the rare earths in river water (Goldstein et al, 1984; Sholkovitz