Soil humic acids may favour the persistence of hexavalent chromium in soil
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| Titel: | Soil humic acids may favour the persistence of hexavalent chromium in soil |
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| Autoren: | Alja Margon, Davide Mosetti, Liviana Leita, Marco Contin, Arnold Pastrello, Iztok Arčon |
| Quelle: | Environmental pollution 157, 1862-1866 (2009). doi:10.1016/j.envpol.2009.01.020 |
| Verlagsinformationen: | Elsevier BV, 2009. |
| Publikationsjahr: | 2009 |
| Schlagwörter: | Chromium, Time Factors, Differential pulse voltammetry, Humic acids, UV-Vis spectroscopy, Ecotoxicology, 01 natural sciences, Soil Pollutants: analysis, Soil, Absorptiometry, Photon, Ecotoxicology: methods, Chromium: chemistry, Electrochemistry, Soil Pollutants, Humic Substances, 0105 earth and related environmental sciences, Chromium: analysis, Absorptiometry, Photon: methods, chromium hexavalent ion, 04 agricultural and veterinary sciences, Spectrophotometry, Ultraviolet: methods, Hydrogen-Ion Concentration, Soil Pollutants: chemistry, Soil: analysis, 6. Clean water, Electrochemistry: methods, 0401 agriculture, forestry, and fisheries, Spectrophotometry, Ultraviolet |
| Beschreibung: | 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. |
| Publikationsart: | Article |
| Dateibeschreibung: | application/pdf |
| Sprache: | English |
| ISSN: | 0269-7491 |
| DOI: | 10.1016/j.envpol.2009.01.020 |
| Zugangs-URL: | https://bib-pubdb1.desy.de/record/87836/files/Cr_HA_article_Reprint_1.pdf https://pubmed.ncbi.nlm.nih.gov/19231051 https://pubmed.ncbi.nlm.nih.gov/19231051/ https://www.sciencedirect.com/science/article/pii/S0269749109000311 https://www.ncbi.nlm.nih.gov/pubmed/19231051 https://www.cabdirect.org/cabdirect/abstract/20093313184 https://core.ac.uk/display/20506858 http://www.sciencedirect.com/science/article/pii/S0269749109000311 https://bib-pubdb1.desy.de/record/87836 |
| Rights: | Elsevier TDM |
| Dokumentencode: | edsair.doi.dedup.....9896ac84e204af416b393caa8f009ddb |
| Datenbank: | OpenAIRE |
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Nájsť tento článok vo Web of Science | 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. |
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| ISSN: | 02697491 |
| DOI: | 10.1016/j.envpol.2009.01.020 |