Behavior of Thiophanate Methyl and Propiconazole in Grape and Mango Fruits Under the Egyptian Field Conditions
| Autor: | Hend A. Mahmoud, Wayne Jiang, Amira Sh. Soliman, Rania M. A. Helmy, Mohamed S. Abbas, Islam Nasr |
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| Rok vydání: | 2017 |
| Předmět: |
Health
Toxicology and Mutagenesis Food Contamination 010501 environmental sciences Toxicology 01 natural sciences High-performance liquid chromatography Thiophanate chemistry.chemical_compound Botany Vitis Mangifera Chromatography High Pressure Liquid 0105 earth and related environmental sciences Pesticide residue fungi 010401 analytical chemistry Pesticide Residues food and beverages General Medicine Triazoles Pollution 0104 chemical sciences Propiconazole Horticulture chemistry Fruit Thiophanate-methyl Egypt Gas chromatography Food contaminant |
| Zdroj: | Bulletin of Environmental Contamination and Toxicology. 98:720-725 |
| ISSN: | 1432-0800 0007-4861 |
| DOI: | 10.1007/s00128-017-2066-x |
| Popis: | This research aims at determining residues of thiophanate methyl and propiconazole in grape and mango fruits as an indication for their persistence in this environmental compartment. Fruit extracts were analyzed for thiophanate methyl using High Performance Liquid Chromatography and using Gas Chromatography Electron Capture Detector (GC/ECD), respectively. The results indicated that propiconazole had a less environmental impact since propiconazole had shorter residue half-lives which were 1.24 and 1.19 days in grape and mango fruits, respectively, while thiophanate methyl had half-lives of 2.49 and 2.64 days in mango and grape, respectively. The degradation rates of propiconazole in grape and mango fruits did not change significantly and neither did those of thiophanate methyl. According to the maximum residue level, the pre-harvest intervals of propiconazole were set to be 3 and 7 days for grape and mango fruits, respectively, and the pre-harvest intervals for thiophanate methyl were 15 days for both grape and mango fruits. Propiconazole was generally considered to be less hazardous to humans and will leave the environment less altered because of its faster degradation than that of thiophanate methyl. |
| Databáze: | OpenAIRE |
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