Dissipation Behavior of Three Pesticides in Prickly Pear (Opuntia ficus-indica (L.) Mill.) Pads in Morelos, Mexico
| Autor: | Dagoberto Guillén-Sánchez, Ernesto Fernández-Herrera, Ismael Rivera-León, Irene Iliana Ramírez-Bustos, Hugo Saldarriaga-Noreña, Irán Alia-Tejacal, Porfirio Juárez-López, Víctor López-Martínez |
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| Rok vydání: | 2019 |
| Předmět: |
QuEChERS
pesticide residues Health Toxicology and Mutagenesis lcsh:Medicine 010501 environmental sciences Quechers 01 natural sciences chemistry.chemical_compound 0105 earth and related environmental sciences PEAR Residue (complex analysis) Chlorothalonil Pesticide residue lcsh:R 010401 analytical chemistry Public Health Environmental and Occupational Health dissipation Pesticide 0104 chemical sciences body regions Horticulture food-safety chemistry Chlorpyrifos Environmental science Malathion |
| Zdroj: | International Journal of Environmental Research and Public Health, Vol 16, Iss 16, p 2922 (2019) International Journal of Environmental Research and Public Health Volume 16 Issue 16 |
| ISSN: | 1660-4601 |
| Popis: | The dissipation of three field-applied pesticides (chlorothalonil, chlorpyrifos, and malathion), on cultivated prickly pear (Opuntia ficus-indica (L.) Mill.) pads was studied. The extraction of pesticides was carried out using the European quick, easy, cheap, effective, rugged, and safe (QuEChERS) extraction technique and detection was carried out using tandem liquid chromatography with mass spectrometry. At harvest, 15 days after application, pesticide dissipation was below the level of detectability. Dissipation curves for prickly pear pads fit to a first-order kinetic equation. Two initial concentration levels were used for each pesticide. The approximate dissipation time for all pesticides studied was similar (10 days) and the half-life time was around six days. Final concentrations for the three pesticides were below the reference maximum residue level (MRL) (0.01 mg/kg), which suggests that these products can be applied safely in the commercial production of prickly pear pads at the established concentrations. |
| Databáze: | OpenAIRE |
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