Computer Science
Scientific paper
May 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993gecoa..57.2169n&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 57, Issue 10, pp.2169-2179
Computer Science
2
Scientific paper
The partitioning of thorium between solid and solution phases in seawater suspensions of aluminium oxide particles was studied in controlled laboratory experiments to determine whether partitioning is consistent with current models of trace-metal adsorption (surface complexation models). Experimental conditions (i.e., thorium and particle concentrations, pH, temperature, salinity) were chosen to be as realistic as possible for coastal seawater while minimizing nonadsorptive processes; 234 Th was used as a tracer of thorium, and filtration/ultrafiltration techniques were used to prepare suspensions with minimal colloidal material, as well as to define and to separate solid and solution phases. A comparison of the experimental results with relationships predicted by surface complexation models shows that thorium sorption in the alumina suspensions was consistent with surface complexation theory: Sorption kinetics were consistent with a (pseudo-) first-order reversible reaction at constant particle concentration, the pseudo-first-order forward rate constants had a first-order dependence on particle concentration, and K d values were independent of particle concentration. Thorium sorption consisted of two distinct reversible reactions, both of which were consistent with surface complexation theory. Second order rate constants were within the range of rate constants reported for the adsorption of divalent metal ions onto -Al 2 O 3 surfaces.
Moore Robert M.
Niven Sherry E. H.
No associations
LandOfFree
Thorium sorption in seawater suspensions of aluminium oxide particles does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Thorium sorption in seawater suspensions of aluminium oxide particles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thorium sorption in seawater suspensions of aluminium oxide particles will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1853367