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Science 6 April 1973:
Vol. 180. no. 4081, pp. 71 - 73
DOI: 10.1126/science.180.4081.71
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Articles

Mechanisms of Trace Metal Transport in Rivers

Ronald J. Gibbs 1

1 Department of Geological Sciences, Northwestern University, Evanston, Illinois 60201

Trace metals transported by the Amazon (and Yukon rivers were analytically partitioned among the transport phases: in solutions, ion exchange, organic materials, metallic coatings, and crystalline solids. The distribution for both rivers is similarly proportioned, with copper and chromium transported mainly in the crystalline solids, manganese in coatings, and iron, nickel, and cobalt distributed equally between precipitated metallic coatings and crystalline solids.


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