Selective chemical extraction of carbonate-associated metals from recent lacustrine sediments

Details Selective chemical extraction of carbonate-associated metals from recent lacustrine sediments Selective chemical extraction of carbonate-associated metals from recent lacustrine sediments

Apr 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978gecoa..42..425d&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 42, Issue 4, pp.425-427

Physics

2

Scientific paper

Acidic ion-exchanger was applied to the selective extraction of heavy metals in carbonate phases of recent lake sediments. Cr was not detected and Fe and Cu contents were reduced by factors of three to ten, relative to non-carbonate fractions of the sediment samples. Values obtained for Mn and Zn exemplify the effects of dilution was well as enrichment, both originating from increased carbonate percentages. Determinations on grain-sized fractions from Bodensee samples suggest that elevated inputs of dissolved Zn, which partly originate from human activities, may be immobilized by authigenic carbonate precipitation.

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