| 毛细管电泳直接分析与水不互溶溶液中痕量物质的新方法 |
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| 引用本文： | 方怀防,曾昭睿,刘岚,庞代文.毛细管电泳直接分析与水不互溶溶液中痕量物质的新方法[J].高等学校化学学报,2006,27(5):856-858. |
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| 作者姓名： | 方怀防 曾昭睿 刘岚 庞代文 |
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| 作者单位： | 武汉大学化学与分子科学学院,武汉,430072;武汉大学化学与分子科学学院,武汉,430072;武汉大学化学与分子科学学院,武汉,430072;武汉大学化学与分子科学学院,武汉,430072 |
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| 基金项目： | 中国科学院资助项目;国家科技攻关项目 |
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| 摘 要： | 本文采用在线反萃取-场放大进样方法实现了毛细管电泳与溶剂微萃取的直接联用.
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| 关 键 词： | 溶剂微萃取 在线反萃取 场放大进样 |
| 文章编号： | 0251-0790（2006）05-0856-03 |
| 收稿时间： | 12 5 2005 12:00AM |
| 修稿时间： | 2005-12-05 |
A Novel Method for Capillary Electrophoresis Directly Analyzing Trace Amounts Analytes in the Water-immiscible Solution Samples |
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| FANG Huai-Fang,ZENG Zhao-Rui,LIU Lan,PANG Dai-Wen.A Novel Method for Capillary Electrophoresis Directly Analyzing Trace Amounts Analytes in the Water-immiscible Solution Samples[J].Chemical Research In Chinese Universities,2006,27(5):856-858. |
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| Authors: | FANG Huai-Fang ZENG Zhao-Rui LIU Lan PANG Dai-Wen |
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| Institution: | College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China |
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| Abstract: | This paper describes a novel method in which solvent microextraction(SME) is followed by on\|line back-extraction-field amplified sample injection(OLBE-FASI) in capillary zone electrophoresis(CZE). The water-immiscible solution sample, sealed with water plug in the sample vial, was used for direct electroinjection. The water plug with moderate content of organic solvent, low-conductivity, and the presence of a small amount of H+ provided the highest sensitivity for analyzing positively chargeable compounds, such as cocaine and thebaine. The linear range was 0.040—4, 0.040—2 μg/mL, with the square of the correlation coefficient(r2)>0.997, respectively. Detection limits were in the range of 5—10 ng/mL. |
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| Keywords: | Solvent microextraction On-line back-extraction Field amplified sample injection |
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