Monitoring residue levels and dietary risk assessment of pymetrozine for Chinese consumption of cauliflower
Monitoring residue levels and dietary risk assessment of pymetrozine for Chinese consumption of cauliflower
复制标题
中国花椰菜消费中吡蚜酮残留水平监测及膳食风险评估
DOI：
10.1002/bmc.4455
复制
发表时间：
2019-04-01
影响因子：
1.8
通讯作者：
Hu, Deyu
中科院分区：
文献类型：
--
作者：
Jia, Guifei;Zeng, Lingrong;Hu, Deyu
本研究调查了2017年固定时间段内从中国6个花椰菜产区采集的花椰菜样品中吡蚜酮的残留情况，并估计了花椰菜中吡蚜酮的膳食风险。建立了花椰菜中吡蚜酮的液相色谱-串联质谱检测方法。样品用20 mL乙腈提取，C-18为吸附剂，分散固相萃取净化。花椰菜中吡蚜酮的定量限为0.008 mg/kg。回收率为82.04-95.18%，RSD为0.999。吡蚜酮在花椰菜中迅速消散，半衰期为
The present study investigates the occurrence of pymetrozine residues in cauliflower samples obtained from six cauliflower-producing areas of China during fixed time periods in 2017 and estimates the dietary risk of pymetrozine in cauliflower. A liquid chromatography with tandem mass spectrometry method was developed and validated to detect pymetrozine in cauliflower. The samples were extracted using 20 mL of acetonitrile and purified with dispersive solid-phase extraction using C-18 as sorbent. The limit of quantification of pymetrozine was 0.008 mg/kg in cauliflower. The recoveries of the analyte were 82.04-95.18% with RSD 0.999. Pymetrozine dissipated rapidly in cauliflower with a half-life of