Arsenic Mobility in Sediments from Paracatu River Basin, MG, Brazil
| Autor: | Cláudia Carvalhinho Windmöller, Patrícia Sueli Rezende, Letícia M. Costa |
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| Rok vydání: | 2015 |
| Předmět: |
Geologic Sediments
Health Toxicology and Mutagenesis Drainage basin chemistry.chemical_element STREAMS Toxicology Mining Arsenic Rivers Arsenopyrite geography geography.geographical_feature_category Sediment General Medicine Pollution Sulfide minerals chemistry visual_art Environmental chemistry visual_art.visual_art_medium Environmental science Surface water Brazil Water Pollutants Chemical Groundwater Environmental Monitoring |
| Zdroj: | Archives of Environmental Contamination and Toxicology. 68:588-602 |
| ISSN: | 1432-0703 0090-4341 |
| DOI: | 10.1007/s00244-015-0134-y |
| Popis: | Paracatu River Basin, Minas Gerais, Brazil, houses long areas of irrigated agriculture and gold-, lead-, and zinc-mining activities. This region has a prevalence of sulfide minerals and a natural occurrence of high levels of arsenopyrite. In this work, surface water, groundwater, sediments and local vegetable samples were collected in October 2010 and November 2011 and were analyzed to evaluate arsenic (As) distribution, mobility, and transport in these environmental compartments. All sediment samples (738-2,750 mg kg(-1)) and 37 % of the water samples [less than the limit of detection (LOD) to 110 µg L(-1)] from the rivers and streams of Paracatu had As concentrations greater than the quality standards established by national and international environmental organizations (5.9 mg kg(-1) for sediments and 10 µg L(-1) for water). Most vegetable samples had As concentrations within the normal range for plants (lower than the LOD to 120 mg kg(-1)). A correlation among As concentrations in water, sediment, and vegetable samples was verified. |
| Databáze: | OpenAIRE |
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