Nitenpyram in tea: Eco-friendly detection methodology and residue behavior

文献类型： 外文期刊

第一作者： Yu, Huan

作者： Yu, Huan;Guo, Mingming;Wang, Xinru;Zhang, Jiazhen;Sun, Hezhi;Zhang, Xinzhong;Yang, Mei;Luo, Fengjian;Wu, Luchao;Zhou, Li;Wang, Xinru;Sun, Hezhi;Zhang, Xinzhong;Yang, Mei;Luo, Fengjian;Zhou, Li

作者机构：

关键词： Water-based; Nitenpyram; Determination; Dissipation; Transfer; Tea

期刊名称：FOOD RESEARCH INTERNATIONAL （ 影响因子：7.0； 五年影响因子：7.4 ）

ISSN： 0963-9969

年卷期： 2024 年 192 卷

页码：

收录情况： SCI

摘要： Studies on nitenpyram determination and behavior within tea remain limited despite its widespread use as a neonicotinoid. An organic-saving analytical approach tailored for the detection of nitenpyram in tea was established. Nitenpyram was extracted by boiling water and cleaned up by Cleanert PCX solid-phase. The average recoveries were 75.1-94.5 %, with relative standard deviations (RSDs) of 0.7-8.6 % for saving 34.5-88.6 % organic solvent. The limits of quantification (LOQs) were 0.002 mg center dot kg- 1 in fresh tea shoots, 0.005 mg center dot kg- 1 in made tea, and 0.001 mg center dot L-1 in tea brew, satisfying the current minimum Maximum Residue Limit (MRL). Nitenpyram dissipated rapidly with half-lives of 1.2-1.4 days at the recommended dosage (27 g a.i. ha-1) in two locations. Remarkably, 20-110 % of nitenpyram was leached out from made tea in different brewing modes. This work provides insights into nitenpyram's rational application in tea cultivation and offers considerations to institutions tasked with unestablished MRLs in tea.

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