| A Compact System of Capacitivity Coupled Contactless Conductivity Detection Based on the Square Wave Excitation Signal for Capillary Electrophoresis |
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| 引用本文： | Shui Feng ZHANG Li Shi WANG Zhi DANG. A Compact System of Capacitivity Coupled Contactless Conductivity Detection Based on the Square Wave Excitation Signal for Capillary Electrophoresis[J]. 中国化学快报, 2006, 17(9): 1229-1232 |
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| 作者姓名： | Shui Feng ZHANG Li Shi WANG Zhi DANG |
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| 作者单位： | College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510640 |
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| 基金项目： | Acknowledgments Financial support from the National Natural Science Foundation of China （No. 20475018） and the Key Program of Guangdong Natural Science Foundation （No. 05103552）, are gratefully acknowledged. |
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| 摘 要： | This paper reported a compact system of capacitively coupled contactless conductivity detection （C4D） based on the square wave excitation voltage for capillary electrophoresis, and it exhibited excellent sensitivity at the optimal frequency of 198 kHz. The feasibility and sensitivity of this detector was demonstrated by simultaneous detection of thirteen ions including alkali, alkaline earth and heavy metal ions. And the detection limits （S/N 3） were in the range of 0.2-1μmol/L for Mn^2＋, K^＋, Na^＋, Mg^2＋, Ca^2＋, Li^＋, Ba^2＋, and 7-25 μmol/L for Ni^2＋, Cu^2＋, Cd^2＋, Pb^2＋, Co^2＋, Zn^2＋.
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| 关 键 词： | 毛细管电泳分析 方波激发信号 遥控传导检测器 金属离子 电容率 |
| 收稿时间： | 2006-03-27 |
A Compact System of Capacitivity Coupled Contactless Conductivity Detection Based on the Square Wave Excitation Signal for Capillary Electrophoresis |
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| Shui;Feng;ZHANG;Li;Shi;WANG;Zhi;DANG. A Compact System of Capacitivity Coupled Contactless Conductivity Detection Based on the Square Wave Excitation Signal for Capillary Electrophoresis[J]. Chinese Chemical Letters, 2006, 17(9): 1229-1232 |
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| Authors: | Shui Feng ZHANG Li Shi WANG Zhi DANG |
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| Abstract: | |
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| Keywords: | Capillary electrophoresis square wave excitation signal contactless conductivitydetector metal ions. |
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