Residues,half-life times,dissipation, and safety evaluation of the acaricide fenpyroximate applied on grapes |
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| Authors: | Farag Malhat Amani El-Mesallamy Mohamed Assy Walid Madian Naglaa M Loutfy |
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| Institution: | 1. Pesticide Residues and Environmental Pollution Department, Central Agricultural Pesticide Laboratory, Agriculture Research Center, Dokki, Egypt;2. Chemistry Department, Faculty of Science, Zagazig University, Zagazig, Egypt;3. Plant Protection Department, Faculty of Agriculture, Suez Canal University, Ismailia, Egypt |
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| Abstract: | A validated high-performance liquid chromatography–diode array detector method for simultaneous determination of the acaricide fenpyroximate on grape was developed. Estimated limit of detection and limit of quantification for fenpyroximate were 0.01 and 0.05 mg kg?1, respectively. The intra- and inter-day precisions performed with relative standard deviation were better than 9.3% and 8%, respectively, while recoveries were in the range of 88.5%–100.4%. Residue levels of fenpyroximate in grape samples collected 10 days after field application were below the established maximum residue level values. The dissipation rates of fenpyroximate were described using first-order kinetics and its half-life, were approximately 3.5 days in grape. This study provides basic information for developing regulations to safeguard the use of fenpyroximate in grapes and prevent any potential health concerns for consumers. |
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| Keywords: | fenpyroximate acaricide residues grape disappearance pattern |
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