| 毛细管电泳-原子荧光在线联用新技术及其在形态分析中的应用 |
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| 引用本文： | 尹学博,江焱,严秀平,何锡文.毛细管电泳-原子荧光在线联用新技术及其在形态分析中的应用[J].高等学校化学学报,2004,25(4):618-621. |
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| 作者姓名： | 尹学博 江焱 严秀平 何锡文 |
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| 作者单位： | 南开大学化学学院分析科学研究中心, 中心实验室, 天津 300071 |
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| 基金项目： | 国家杰出青年基金 (批准号 :2 0 0 2 5 5 16)资助 |
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| 摘 要： | 讨论了原子荧光光度计从传统的间歇式或流动注射式操作到与毛细管电泳联用技术的转化.考察了不同接口对分离的影响,优化了氢化物发生所用的气液分离器及原子荧光光度计的原子化器.通过缩短连路和改变管路内径等方式消除了体系的反压.将优化的仪器条件应用于As的形态分析,结果令人满意.
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| 关 键 词： | 联用技术 毛细管电泳 氢化物发生原子荧光光谱 形态分析 接口 |
| 文章编号： | 0251-0790(2004)04-0618-04 |
| 收稿时间： | 2003-01-20 |
Capillary Electrophoresis On-line Coupled with Atomic Fluorescence Spectrometry and Its Application for Speciation Analysis |
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| YIN Xue-Bo,JIANG Yan,YAN Xiu-Ping ,HE Xi-Wen.Capillary Electrophoresis On-line Coupled with Atomic Fluorescence Spectrometry and Its Application for Speciation Analysis[J].Chemical Research In Chinese Universities,2004,25(4):618-621. |
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| Authors: | YIN Xue-Bo JIANG Yan YAN Xiu-Ping HE Xi-Wen |
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| Institution: | Central Laboratory, Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin 300071, China |
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| Abstract: | The low cost, easy operation and high sensitivity of hydride generation atomic fluorescence spectrometer(HG-AFS) make it attractive as an on-line element-specific detector of capillary electrophoresis(CE) for speciation of hydride-forming elements. A few important practical aspects for the on-line coupling of CE to AFS are critically discussed. These include adaptation of conventional atomic fluorescence spectrometer for CE, design of an efficient interface, gas-liquid separator and AFS atomizer, and elimination of the effect of backpressure on CE separation. The application of the developed CE-HG-AFS for the speciation analysis of arsenic in water and urine samples is highlighted. |
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| Keywords: | Hyphenated technique Capillary electrophoresis Hydride generation atomic fluorescence spectrometry Speciation analysis Interface |
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