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- Title
测定葡萄中苯醚甲环唑、己唑醇和咪鲜胺代谢物残留量方法研究.
- Authors
刘磊; 李娜; 李辉; 邵辉; 陈秋生; 郭永泽; 卢娜; 张玉婷
- Abstract
Objective To establish a method for determination of difenoconazole, hexaconazole and prochloraz residues in grapes by ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) and gas chromatography (GC). Methods Grape samples were extracted by mixture of acetonitrile and water, supernatant was hydrolyzed and analyzed after salted out. UPLC-MS/MS and GC methods were established after optimization of the pretreatments and chromatographic conditions. Quantitative analysis was carried out with the standard curve of the target pesticides. Results According to the results of a 3 level standard recovery experiment, the average recoveries of the established method ranged from 79% to 102%, and the relative standard deviations (RSDs) ranged from 0.5% to 6.9% (n=5). The limits of quantitation (LOQs) of difenoconazole and hexaconazole in grapes were 0.01 mg/kg, while the LOQ of prochloraz was 0.2 mg/kg. Conclusion The established analytical method is simple to operate, has good separation and purification effect, significantly improves the pretreatment efficiency, and meets the requirements of pesticide residue detection with sensitivity, accuracy and precision.
- Publication
Journal of Food Safety & Quality, 2018, Vol 9, Issue 17, p4497
- ISSN
2095-0381
- Publication type
Article