Citation: Hai Yan Feng, Xiang Jun Li, Shu Rong Hou, Na Zheng, Zhong Bo Hu, Zhuo Bin Yuan. On-line concentration of trace genistein by acid barrage stacking in capillary electrophoresis with UV detection[J]. Chinese Chemical Letters, ;2008, 19(8): 973-976. doi: 10.1016/j.cclet.2008.05.022 shu

On-line concentration of trace genistein by acid barrage stacking in capillary electrophoresis with UV detection

a College of Chemistry and Chemical Engineering, the Graduate University of the Chinese Academy of Sciences, Beijing 100049, China;
b School of Chemical Engineering, Shijiazhuang University, Shijiazhuang 050035, China

Received Date: 10 March 2008

Fund Project: 20775088)the Foundation of State Key Laboratory of Electroanalytical Chemistry (No.2006002) and the President Foundation of GUCASThis work is support by the National Natural Science Foundation of China (No.20235010

A capillary electrophoresis method with UV detection was developed for high sensitively determining genistein.In this method, the online acid barrage stacking was applied.Four key factors influencing the stacking efficiency were systematically optimized.Genistein can be detected within 5 rain at the concentration of 10 nmol/L, which was 300 times lower than that from conventional hydrodynamic injection.The repeatability, linear range, and limit of detection of the method were investigated with satisfactory result.
- Acid barrage stacking,
- Genistein,
- Online concentration,
- Capillary electrophoresis,
- Acidic compound
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