| Literature DB >> 19231051 |
Liviana Leita1, Alja Margon, Arnold Pastrello, Iztok Arcon, Marco Contin, Davide Mosetti.
Abstract
The interaction between hexavalent chromium Cr(VI), as K(2)CrO(4), and standard humic acids (HAs) in bulk solution was studied using three complementary analytical methods: UV-Visible spectroscopy, X-ray absorption spectroscopy and differential pulse stripping voltammetry. The observed UV-Vis and X-ray absorption spectra showed that, under our experimental conditions, HAs did not induce reduction of Cr(VI) to its trivalent chemical form. The interaction between Cr(VI) and HAs has rather led to the formation of Cr(VI)-HAs micelles via supramolecular chemical processes. The reported results could contribute towards explaining the relative persistence of ecotoxic hexavalent chromium in soils.Entities:
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Year: 2009 PMID： 19231051 DOI： 10.1016/j.envpol.2009.01.020
Source DB: PubMed Journal: Environ Pollut ISSN： 0269-7491 Impact factor: 8.071