Simultaneous determination of five metal ions by on-line complexion combined with micelle to solvent stacking in capillary electrophoresis

被引：29
|
作者：
Song, Xiaoyu [1 ]
Zhang, Rui [1 ]
Wang, Yue [1 ]
Feng, Mengqing [1 ]
Zhang, Honghua [1 ]
Wang, Shuling [1 ]
Cao, Jun [1 ,2 ]
Xie, Tian [1 ,3 ,4 ,5 ]
机构：
[1] Hangzhou Normal Univ, Med Coll, Hangzhou 311121, Peoples R China
[2] Hangzhou Normal Univ, Coll Mat Chem & Chem Engn, Hangzhou 311121, Peoples R China
[3] Hangzhou Normal Univ, Holist Integrat Pharm Inst, Hangzhou 311121, Peoples R China
[4] Key Lab Elemene Anticanc Med Zhejiang Prov, Hangzhou 311121, Peoples R China
[5] Engn Lab Dev & Applicat Tradit Chinese Med Zhejia, Hangzhou 311121, Peoples R China
来源：
TALANTA | 2020年 / 209卷
基金：
中国国家自然科学基金;
关键词：
Metal ions; On-line complexion; Micelle to solvent stacking; Capillary electrophoresis; Beebread; Dendrobium officinale; LIQUID-LIQUID MICROEXTRACTION; ENHANCED SAMPLE INJECTION; SPECIATION ANALYSIS; MERCURY; PRECONCENTRATION; CATIONS; COMPLEXATION; COPPER;
D O I：
10.1016/j.talanta.2019.120578
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A direct on-line complexion combined with micelle to solvent stacking method was proposed for simultaneous determination of metal ions by capillary electrophoresis coupled diode array detector. During the experiment, a plug of complexing agent was first injected to the inlet of capillary, followed by introducing the micelle-bound metal ions. Then the metal ions produced a micelle-to-solvent stacking effect and interacted with the complexing agent under a positive voltage. Continued application of voltage, the analytes were effectively focused and separated in the capillary zone electrophoresis. Repeatability was ranged from 1.89% to 1.94% for the migration time. The detection limits were 2.66-27.9 ng mL(-1) for Ni2+, Co2+, Cu2+ , Hg2+ and Cd2+. Furthermore, the developed method showed a great potential for the determination of metal ions in the crayfish, beebread and Dendrobium officinale samples.
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页数：8
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