Presence of Organoarsenicals Used in Cotton Production in Agricultural Water and Soil of the Southern United States
| Autor: | James F. Ranville, A.J. Bednar, Thomas R. Wildeman, J R Garbarino |
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| Rok vydání: | 2002 |
| Předmět: |
Gossypium
Insecticides Arkansas Herbicides Arsenate Water Mineralogy chemistry.chemical_element Soil chemistry Agriculture General Chemistry Soil contamination Arsenicals Soil chemistry.chemical_compound Mississippi chemistry Environmental chemistry Soil water Maximum Contaminant Level General Agricultural and Biological Sciences Water pollution Arsenic Arsenite |
| Zdroj: | Journal of Agricultural and Food Chemistry. 50:7340-7344 |
| ISSN: | 1520-5118 0021-8561 |
| DOI: | 10.1021/jf025672i |
| Popis: | Arsenicals have been used extensively in agriculture in the United States as insecticides and herbicides. Mono- and disodium methylarsonate and dimethylarsinic acid are organoarsenicals used to control weeds in cotton fields and as defoliation agents applied prior to cotton harvesting. Because the toxicity of most organoarsenicals is less than that of inorganic arsenic species, the introduction of these compounds into the environment might seem benign. However, biotic and abiotic degradation reactions can produce more problematic inorganic forms of arsenic, such as arsenite [As(III)] and arsenate [As(V)]. This study investigates the occurrences of these compounds in samples of soil and associated surface and groundwaters. Preliminary results show that surface water samples from cotton-producing areas have elevated concentrations of methylarsenic species (>10 microg of As/L) compared to background areas ( |
| Databáze: | OpenAIRE |
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