Organochlorine (chlordecone) uptake by root vegetables
| Autor: | Lesueur-Jannoyer Magalie, Clostre Florence, Letourmy Philippe |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Insecticides
Health Toxicology and Mutagenesis H02 - Pesticides Toxicology Soil Igname Vegetables Soil Pollutants Ipomoea batatas Dioscorea Chemistry Soil classification Persistance des pesticides General Medicine Contamination Pollution Soil contamination Chlordecone Q03 - Contamination et toxicologie alimentaires P02 - Pollution P33 - Chimie et physique du sol Environmental Engineering Pollution par l'agriculture Pollution du sol Humans Environmental Chemistry Contamination chimique Propriété physicochimique du sol Colocasia esculenta Pollutant Patate douce Public Health Environmental and Occupational Health Environmental engineering Taro General Chemistry Pesticide Soil water Légume racine Chlordécone Amorphophallus |
| Zdroj: | Chemosphere |
| ISSN: | 0045-6535 |
| Popis: | Chlordecone, an organochlorine insecticide, continues to pollute soils in the French West Indies. The main source of human exposure to this pollutant is food. Root vegetables, which are staple foods in tropical regions, can be highly contaminated and are thus a very effective lever for action to reduce consumer exposure. We analyzed chlordecone contamination in three root vegetables, yam, dasheen and sweet potato, which are among the main sources of chlordecone exposure in food in the French West Indies. All soil types do not have the same potential for the contamination of root vegetables, allophanic andosols being two to ten times less contaminating than non-allophanic nitisols and ferralsols. This difference was only partially explained by the higher OC content in allophanic soils. Dasheen corms were shown to accumulate more chlordecone than yam and sweet potato tubers. The physiological nature of the root vegetable may explain this difference. Our results are in good agreement with the hypothesis that chlordecone uptake by root vegetables is based on passive and diffusive processes and limited by transport and dilution during growth. |
| Databáze: | OpenAIRE |
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