Thorium adsorption in the ocean: reversibility and distribution amongst particle sizes

Details Thorium adsorption in the ocean: reversibility and distribution amongst particle sizes Thorium adsorption in the ocean: reversibility and distribution amongst particle sizes

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985gecoa..49.2253m&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 49, Issue 11, pp.2253-2257

Computer Science

5

Scientific paper

Experiments have been carried out to determine whether the adsorption of Th by marine suspended particles is a reversible process. The results indicate reversibility on a time scale of hours. The distribution of Th between the `dissolved' state (<0.22 m particle size) and various particle size fractions has been compared with predictions based on a hyperbolic size distribution of marine particles assuming spherical geometry and surface adsorption. Thorium is present in small particles to a much smaller degree than such a model would predict, so that the use of 1 m pore size filters to separate `dissolved' and `particulate' Th does not introduce serious errors. The implications of these results on the reversible exchange model of and (1982) and on the settling model of and (1978) are discussed.

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