Desorption of Ba and 226Ra from river-borne sediments in the Hudson estuary

Details Desorption of Ba and 226Ra from river-borne sediments in the Hudson estuary Desorption of Ba and 226Ra from river-borne sediments in the Hudson estuary

Jun 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979e%26psl..43..343l&link_type=abstract

Earth and Planetary Science Letters, Volume 43, Issue 3, p. 343-350.

Physics

23

Scientific paper

The pronounced desorption of Ba and 226Ra from river-borne sediments in the Hudson estuary can be explained quantitatively by the drastic decrease in the distribution coefficients of both elements from a fresh to a salty water medium. The desorption in estuaries can augment, at least, the total global river fluxes of dissolved Ba and 226Ra by one and nine times, respectively. The desorptive flux of 226Ra from estuaries accounts for 17-43% of the total 226Ra flux from coastal sediments. Two mass balance models depicting mixing and adsorption-desorption processes in estuaries are discussed.

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