Mineralogy and Arsenic Mobility in Arsenic-rich Brazilian Soils and Sediments (11 pp)
The mineralogy and arsenic mobility in arsenic-rich Brazilian soils and sediments were studied. The objective was to identify the most important factors governing As mobility in sediments and soils near three gold-mining sites in the State of Minas Gerais, Brazil. The resulting information was inten...
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| Published in: | Journal of soils and sediments Vol. 6; no. 1; pp. 9 - 19 |
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| Main Authors: | , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
01-02-2006
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | The mineralogy and arsenic mobility in arsenic-rich Brazilian soils and sediments were studied. The objective was to identify the most important factors governing As mobility in sediments and soils near three gold-mining sites in the State of Minas Gerais, Brazil. The resulting information was intended to be used to develop both prevention and remediation strategies for the mine-affected regions. Arsenic mobilization was measured after incubating samples in a 2.5 mM CaCl sub(2) solution under anaerobic conditions for 1, 28, 56, 84, or 112 days. The solution concentrations of As, Fe, and Mn were then measured by inductively coupled plasma-mass spectrometry (ICP-MS) and atomic absorption spectroscopy (AAS). It was observed that under reducing conditions, As was mobilized by the reductive dissolution of Fe and/or Mn oxides. |
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| Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
| ISSN: | 1439-0108 1614-7480 |
| DOI: | 10.1065/jss2005.09.144 |