Determination of Valifenalate in Grape, Vegetables, and Soil Using Ultrahigh Performance Liquid Chromatography Tandem Mass Spectrometry and Exploration of Its Degradation Behavior in Grape Field

文献类型： 外文期刊

第一作者： Tao, Yan

作者： Tao, Yan;Pan, Xinglu;Jiang, Duoduo;Dong, Fengshou;Xu, Jun;Liu, Xingang;Wu, Xiaohu;Zheng, Yongquan;Chen, Zenglong

作者机构：

关键词： Valifenalate; Residues; Degradation rate; Ultrahigh performance liquid chromatography coupled to tandem mass spectrometry (UHPLC-MS/MS)

期刊名称：FOOD ANALYTICAL METHODS （ 影响因子：3.366； 五年影响因子：3.07 ）

ISSN： 1936-9751

年卷期： 2019 年 12 卷 3 期

页码：

收录情况： SCI

摘要： A novel, sensitive, and rapid analytical method for analyzing valifenalate residue in grape, vegetables (tomato, lettuce, eggplant, potato), and soil was established and validated using a modified quick, easy, cheap, effective, rugged, and safe (QuEChERS) method by ultrahigh performance liquid chromatography coupled to tandem mass spectrometry (UHPLC-MS/MS). The determination of the analyte was achieved within 4 min for per injection using electrospray ionization (ESI) operated in positive ion mode, and the retention time was 1.92min. The developed method exhibited good linearity (R-2 >= 0.9941) and the limit of quantitation (LOQ) was 0.5 mu g/kg for analyte in selected matrices. The mean recoveries in six matrices ranged from 74.5 to 106.6% with intra-day relative standard deviation (RSD) of 0.7-12.3% and inter-day RSD of 3.2-12.2% at four spiking levels (0.5, 10, 100, 500 mu g/kg) in recovery assays. The proposed method was applied to explore the dissipation rates of valifenalate in grapes and soil under field conditions, and the half-lives of analyte in grape and soil were 15.5 +/- 1.4 and 3.8 +/- 0.1days, respectively. The study indicated that the method was effective and reliable for detection of valifenalate residues and the dissipation data can provide reference towards safety application for the analyte.

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