Dissolved niobium and tantalum in the North Pacific

Details Dissolved niobium and tantalum in the North Pacific Dissolved niobium and tantalum in the North Pacific

Apr 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998georl..25..999s&link_type=abstract

Geophysical Research Letters, Volume 25, Issue 7, p. 999-1002

Physics

Information Related To Geographic Region: North America, Oceanography: General: Physical And Chemical Properties Of Seawater

Scientific paper

Niobium and tantalum were measured in North Pacific seawater. The concentration of Nb shows a slight depletion in surface water and that of Ta shows a slight increase near the bottom. The mean concentrations of Nb in surface and deep Pacific water are 3.0 and 3.8 pmol/kg, respectively, and for Ta, 0.08 and 0.20 pmol/kg. Their relatively uniform distribution suggests that Nb and Ta are less reactive with particles in seawater than Zr and Hf. In analogy with V, the species of Nb and Ta may be oxyacids rather than hydroxides.

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