Bioconcentration and half-life of quinalphos pesticide in rice-fish integration system in the mekong delta, vietnam
| Autor: | Caroline Douny, Marie-Louise Scippo, Nguyen Thanh Phuong, Nguyen Quoc Thinh, Do Thi Thanh Huong, Patrick Kestemont, Tran Minh Phu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Geologic Sediments
Insecticides Carps 0211 other engineering and technologies Cyprinidae Bioconcentration Quinalphos 02 engineering and technology Aquaculture 010501 environmental sciences 01 natural sciences Toxicology chemistry.chemical_compound Common carp Animals Muscle Skeletal 0105 earth and related environmental sciences 021110 strategic defence & security studies business.industry Sediment Aquatic animal Organothiophosphorus Compounds Oryza General Medicine Pesticide Rice-fish integration system Pollution chemistry Vietnam Bioaccumulation Environmental science business Water Pollutants Chemical Food Science Half-Life Mekong delta |
| Zdroj: | Journal of Environmental Science and Health - Part B Pesticides, Food Contaminants, and Agricultural Wastes. 53(1):35-41 |
| ISSN: | 1532-4109 0360-1234 |
| Popis: | In order to determine the distribution and enable the elimination of quinalphos, a popular active pesticide compound used in the Mekong Delta, an experiment was set up in a rice-fish integration system in Can Tho City, Vietnam. Fish was stocked into the field when the rice was two-months old. Quinalphos was applied twice in doses of 42.5 g per 1000 m 2 . Water, fish and sediment samples were collected at time intervals and analyzed by a Gas Chromatography Electron Capture Detector system. The results show that quinalphos residues in fish muscles were much higher than those of the water and the bioconcentration factor (logBCF) was above 2 for the fish. The half-life of first and second quinalphos applications were 12.2 and 11.1 days for sediment, 2.5 and 1.1 days for silver barb, 1.9 and 1.3 days for common carp, and 1.1 and 1.0 days for water, respectively. |
| Databáze: | OpenAIRE |
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