文献类型：期刊文献

英文题名：Simultaneous Determination of Seven Carbamate Pesticide Residues in Vegetable by Capillary Electrophoresis with Solid Phase Microextraction

作者：Zhang, Wenjuan[1];Yang, Fuxiu[1];Zhang, Yuan[1,2];Zhou, Kaowen[1,2]

通讯作者：Zhang, Y[1];Zhou, KW[1];Zhang, Y[2];Zhou, KW[2]

机构：[1]Beijing Union Univ, Biochem Engn Coll, Beijing 100023, Peoples R China;[2]Beijing Key Lab Biomass Waste Resource Utilizat, Beijing 100023, Peoples R China

第一机构：北京联合大学生物化学工程学院

通讯机构：[1]corresponding author), Beijing Union Univ, Biochem Engn Coll, Beijing 100023, Peoples R China;[2]corresponding author), Beijing Key Lab Biomass Waste Resource Utilizat, Beijing 100023, Peoples R China.|[1141726]北京联合大学生物化学工程学院;[11417]北京联合大学;

年份：2021

卷号：16

期号：6

起止页码：1-14

外文期刊名：INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE

收录：;Scopus(收录号：2-s2.0-85109945515);WOS:【SCI-EXPANDED(收录号:WOS:000661490000052)】；

基金：This work was supported by Beijing Natural Science Foundation of China (Grant No.2152013).

语种：英文

外文关键词：Carbamate pesticide; Vegetable; Solid phase microextraction; Capillary electrophoresis

摘要：An efficient method for simultaneous determination of seven carbamate pesticides in vegetable was established based on purifing and enriching by solid phase microextraction, separating by capillary electrophoresis (CE) and detecting by column end electrochemiluminescence (ECL). The effects of acidity, time, temperature, ionic strength and eluent on the recovery of seven pesticides in sample solutions were investigated. The best purification and enrichment parameters of 0.2 g hollow fiber in 10.0 mL extraction solution are: pH value 6, extraction time 35 min, extraction temperature 50 degrees C, NaCl 1.5 g, and 2.0 mL acetonitrile (containing 5% formic acid) as eluent. The effects of acidity, salt concentration, additive concentration and separation voltage on the resolution of seven pesticides in separation medium were investigated. The phosphate buffer solution (PBS) containing 45 mmol/L NaCl and 25 mmol/L cyclodextrin was used as separation solution of CE. The pH of PBS is 6.5. The separation voltage is 17 kV. There are good linear relationships between the mass concentrations of seven carbamate pesticides and their ECL intensities. Their detection limits were 0.1-0.5 mu g/L. The recoveries of standard addition for vegetable samples were 86.1%-115.8%. The method is rapid and accurate for the determination of carbamate pesticides in vegetables.