摘要
利用自建的毛细管电泳-电容耦合非接触电导检测系统,通过对缓冲溶液、添加剂、分离电压、有效长度等条件的优化,实现了6种苯氧羧酸类和2种苯甲酸类除草剂的同时分离检测,并应用于黄河水中8种除草剂残留的检测.结果表明,在含有α-环糊精的三乙胺体系中,可实现8种除草剂在6 min内同时分离检测;在7.8~300μmol/L范围内浓度与峰面积呈良好的线性相关,检出限为2.00~3.93μmol/L;迁移时间和峰面积的日内、日间重现性的相对标准偏差为0.40%~5.78%;黄河水样的加标回收率为80.11%~114.41%.与传统检测分析方法相比,该方法的设备便于携带、操作简单,有望成为环境中多种农药残留同时检测的新型技术.
Using a self-built capillary electrophoresis-capacitively coupled contactless conductivity detection system,the separation and detection of 6 phenoxy herbicides and 2 benzoic acids herbicides were realized by optimizing the buffer,additives,separation voltage,effective length and other conditions,and this method was used for the detection of eight herbicide residues in the Huanghe River water.The experimental results showed that,in the triethylamine system containingα-cyclodextrin,eight herbicides could be separated and detected simultaneously within 6 min,and the concentration was positively and linearly correlated with the peak area in the concentration range of 7.8-300μmol/L,the detection limit was 2.00-3.93μmol/L,the relative standard deviation of migration time,intraday and interday reproducibility of peak area between 0.40%and 5.78%,and the recovery rate of spiked water samples in the Yellow River between 80.11%and 114.41%.Compared with the traditional detection and analysis methods,this method is portable and the experimental operation simple,which is expected to become a favorable technology for the simultaneous detection of multiple pesticide residues in the environment.
作者
王安婷
西任古丽·海力吾力
周思佳
曹长余
王兆彦
蒲巧生
WANG An-ting;XIRENGULI Hailiwuli;ZHOU Si-jia;CAO Chang-yu;WANG Zhao-yan;PU Qiao-sheng(School of Pharmacy,Lanzhou University,Lanzhou 730000,China;College of Chemistry and Chemical Engineering,Lanzhou University,Lanzhou 730000,China)
出处
《兰州大学学报(自然科学版)》
CAS
CSCD
北大核心
2024年第6期824-829,共6页
Journal of Lanzhou University(Natural Sciences)
基金
甘肃省自然科学基金项目(22JR5RA495)
国家自然科学基金项目(21405067,21974057)。
关键词
苯氧羧酸类除草剂
苯甲酸类除草剂
黄河水样
毛细管电泳-电容耦合非接触电导
phenoxy herbicide
benzoic acids herbicide
Huanghe River water sample
capillary electrophoresis-capacitively coupled contactless conductivity detection