Residue behaviors and risk assessment of flonicamid and its metabolites in the cabbage field ecosystem

文献类型： 外文期刊

第一作者： Wang, Shanshan

作者： Wang, Shanshan;Jin, Fen;Cao, Xiaolin;Shao, Yong;She, Yongxin;Qi, Yan;Zhang, Chao;Li, Hui;Jin, Maojun;Wang, Jing;Shao, Hua;Zheng, Lufei;Wang, Jian

作者机构：

关键词： Cabbage; Flonicamid and its metabolites; Dissipation behavior; Residue distribution; Risk assessment

期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：6.291； 五年影响因子：6.393 ）

ISSN： 0147-6513

年卷期： 2018 年 161 卷

页码：

收录情况： SCI

摘要： Flonicamid, a novel selective systemic pesticide, can effectively control a broad range of insect pests. However, the dissipation behaviors and the terminal residues of flonicamid and its metabolites in some crops and soils remain unclear. Herein, an easy, sensitive and reliable method using a modified QuEChERS extraction coupled with LC-MS/MS for the simultaneous analysis of flonicamid and its metabolites in cabbage and soil was developed. Based on this method, the dissipation behaviors of flonicamid and its metabolites as well as their persistence in cabbage and soil during harvest were investigated. Flonicamid degraded rapidly, and the half-lives of flonicamid only and total residues (the sum of flonicamid and its metabolites) were 1.49-4.59 and 1.97-4.99 days in cabbage, and 2.12-7.97 and 2.04-7.62 days in soil, respectively. When 50% flonicamid WG was sprayed once or twice at the recommended dose and 1.5-fold the recommended dose, the highest residues of total flonicamid in cabbage and soil from different pre-harvest intervals (3, 7 and 14 days) were 0.070 and 0.054 mg kg(-1), respectively. The risk quotient (RQ) of flonicamid based on the consumption data from China was below 16.84%, indicating that the use of flonicamid is non-hazardous to humans. These results could not only guide the safe and responsible use of flonicamid in agriculture but also help the Chinese government establish the maximum residue level (MRL) for flonicamid in cabbage.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序