104
0
20
40
60
:g 80
t 100
c!: 120
140
160
180
200
0
20
40
60
:g 80
~
100
0.
c!: 120
140
160
180
200
0
2
0
200
Ni(nM}
4
Cd (pM)
6
8
0
400
600 0
F.J. Millero
Cu(nM}
2
4
6
Zn(nM}
20
40
60
,---,---,---,---,---.---,
r--.---,---,---,---~_,-.
Fig. 4.13 a. Profiles of metals in the Framvaren Fjord: Ni, Cu, Cd and Zn (Yao and Millero 1995b)
(Haraldsson and Westerlund 1988). Our higher value might be due to the better sampling resolution with the submersible pumping system. It might also reflect the continuing accumulation of Mn in the transition zone. The concentrations of dissolved
Mn decreased rapidly below the maximum peak at 21 m and reached nearly constant
values (less than 1 j.lM) below 100 m.
The concentrations of dissolved Fe started increasing just below the 02/H2S interface (Fig. 4.14) to a sharp maximum at 21 m. The maximum value found in this study,
2.85 j.lM, is higher than earlier values of 2.0 j.lM (Haraldsson and Westerlund 1988). Again,