May 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990e%26psl..98..208k&link_type=abstract
Earth and Planetary Science Letters, Volume 98, Issue 2, p. 208-221.
Other
8
Scientific paper
A suite of seawater samples has been analyzed for Au by inductively coupled plasma quadrupole mass spectroscopy (ICPMS). The recently developed method involves preconcentration by anion exchange followed by flow injection-sample introduction into a VG Plasmaquad ICPMS. Profiles in the Atlantic Gulf Stream, Northeast Pacific and Mediterranean are presented. In addition, the first measurements of Au in hydrothermal fluids are reported. The measured concentrations of Au in the Atlantic and Northeast Pacific (50-150 fmol/l) are within a factor of 2-3 of recently reported values for Pacific waters [1] and nearly three orders of magnitude less than reported in the literature prior to 1988, indicating contamination problems with the earlier data. In general, Au concentrations for Atlantic and Pacific samples reported here are the same ( ~ 50 fmol/l) however differences of up to a factor of ~ 2 between the oceans cannot be ruled out due to large uncertainties associated with the Pacific data. Mediterranean deep waters contain higher concentrations of Au (100-150 fmol/l); this is attributed to proximal aeolian dust and/or riverine sources. Gold is enriched in hydrothermal fluids (10-100's of pmol/l) with respect to ambient seawater. Although the fluxes remain poorly constrained, preliminary budget considerations indicate that rivers and hydrothermal venting are the most significant sources of Au to the oceans.
Edmond John M.
Kenison Falkner K.
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