Simultaneous Determination of Inorganic Cations and Anions in Microchip Electrophoresis Using High-voltage Relays

被引：8
作者：
Huang, Zhe [1 ,2 ]
Yang, Mingpeng [1 ,2 ]
You, Hui [1 ,2 ]
Xie, Yang [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Intelligent Machines, Hefei 230031, Anhui, Peoples R China
[2] Univ Sci & Technol China, Dept Instruments Sci & Engn, Hefei 230026, Anhui, Peoples R China
来源：
ANALYTICAL SCIENCES | 2018年 / 34卷 / 07期
关键词：
Microchip electrophoresis; capacitively coupled contactless conductivity detection; simultaneous determination; high-voltage relay; cation; anion; CONTACTLESS CONDUCTIVITY DETECTION; CAPILLARY-ELECTROPHORESIS; ELECTRODES; CHIPS;
D O I：
10.2116/analsci.18P022
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A new and simple method for the simultaneous determination of cations and anions by microchip electrophoresis with capacitively coupled contactless conductivity detection (ME-(CD)-D-4) is described. The best analytical performance was found by applying a sinusoidal wave with 800 kHz frequency and 20 V,, amplitude. An optimized background electrolyte (BGE) composed of 20 mM His/MES and 0.01 mM CTAB was chosen for the simultaneous analysis. Samples containing K+, Na+, and Li+ as the cations and Cl-, F- and PO43- as anions were analyzed simultaneously in a single run (within 3 min). The reproducibility obtained by the method was compared with those obtained in previous studies that had employed simultaneous analysis of anions and cations by ME-(CD)-D-4. The proposed simultaneous determination method is inexpensive, simple, fast, easy to operate, and offers a high degree of integration.
引用
收藏
页码：801 / 805
页数：5
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