Physics
Scientific paper
Sep 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981gecoa..45.1401k&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 45, Issue 9, pp.1401-1409
Physics
1
Scientific paper
A dialysis technique has been developed from which whole sediment diffusion coefficients that include the effect of microbially-mediated reactions can be determined in situ . Application of the technique shows that the diffusion of both dissolved sulphate and total dissolved CO 2 (transported primarily as bicarbonate) is related to the changing porosity of a fine-grained marine sediment. Added to this, the transport of dissolved sulphate is significantly affected by the microbial reduction of the pool available for diffusion. In contrast, the diffusion of a far larger pool of total dissolved CO 2 is not noticeably affected by microbial activity.
Bowen A. J.
Cooke Robert C.
Kepkay Paul E.
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