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Dissipation Kinetics and Safety Evaluation of Flonicamid in Four Various Types of Crops

文献类型： 外文期刊

作者： Zhang, Tao 1 ; Xu, Yue 2 ; Zhou, Xuan 1 ; Liang, Xiaojie 1 ; Bai, Yang 3 ; Sun, Fengshou 3 ; Zhang, Wenwen 3 ; Wang, Ning 4 ; Pang, Xiuyu 4 ; Li, Yuekun 1 ;

作者机构： 1.Ningxia Acad Agr & Forestry Sci, Wolfberry Sci Res Inst, Natl Wolfberry Engn Res Ctr, Yinchuan 750002, Peoples R China

2.Shandong Agr Univ, Coll Plant Protect, Shandong Prov Key Lab Biol Vegetable Dis & Insect, Tai An 271018, Peoples R China

3.Shandong Agr Univ, Res Ctr Pesticide Environm Toxicol, Tai An 271018, Peoples R China

4.Shandong First Med Univ & Shandong Acad Med Sci, Sch Publ Hlth, Dept Nutr & Food Hyg, Tai An 271016, Peoples R China

关键词： flonicamid; QuEChERS; dissipation; final residues; dietary risk assessment

期刊名称：MOLECULES （ 影响因子：4.927； 五年影响因子：5.11 ）

ISSN：

年卷期： 2022 年 27 卷 23 期

页码：

收录情况： SCI

摘要： The chemical insecticide flonicamid is widely used to control aphids on crops. Differences among crops make the universality of detection methods a particularly important consideration. The aim of this study was to establish a universal, sensitive, accurate and efficient method for the determination of flonicamid residues in peach, cucumber, cabbage and cotton. QuEChERS pretreatment was combined with ultrahigh-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). A satisfactory recovery rate of 84.3-99.3% was achieved at three spiking levels, and the relative standard deviation (RSD) was 0.41-5.95%. The limit of quantification (LOQ) of flonicamid in the four matrices was 0.01 mg/kg. The residue and dissipation kinetics of flonicamid in four types of crops in various locations were determined by using the optimized method. The results showed that flonicamid had a high dissipation rate in the four different types of crops and a half-life in the different matrices and locations of 2.28-9.74 days. The terminal residue of flonicamid was lower than the maximum residue limit (MRL). The risk quotient (RQ) of flonicamid was 4.4%, which is significantly lower than 100%. This result shows that the dietary risk presented by using flonicamid at the maximum recommended dose is low and acceptable. The comprehensive long-term dietary risk assessment of flonicamid performed in this study provides a reference for the protection of consumer health and safe insecticide use.

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