0
0.4
33° N 139° W
35° N 138° W
35° N 122° W
27° S 56° E
06° S 51° E
0
0.4
0.8
1.2
1.6
32° N 64° W
26° N 33° W
24° N 165° E
0
1
2
3
4
5
Eastern Pacific
Atlantic and Western Pacific
Indian Ocean
Depth (km)
0.8
1.2
1.6
0
0.5
1
1.5
Pt (pmol kg
_ 1 )
Pt (pmol kg
_ 1 )
Pt (pmol kg
_ 1 )
Figure 5 Dissolved Pt profiles from the Pacific, Indian and Atlantic Oceans. Although deep-water concentrations are similar to one another the vertical distribution of Pt differs dramatically
among the various profiles. Data are from the following sources. Eastern Pacific: Hodge et al. (1986) Analytical Chemistry 58, p. 616; Indian: Jacinto and van den Berg (1992) Nature 338, p.
332; Atlantic and western Pacific: Colodner et al. (1993) Analytical Chemistry 65, p. 419 and Colodner (1991) The marine geochemistry of rhenium, platinum and iridium. Ph. D. thesis. MIT/
WHOI Joint Program in Oceanography.
PLATINUM GROUP ELEMENTS AND THEIR ISOTOPES IN THE OCEAN 35
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