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Citation: HUANG Bao-Mei, YAO Cheng-Wei, LI Song, MO Jin-Yuan. Separation of Metalaxyl Enantiomers by Capillary Electrophoresis with Conductive Detection[J]. Chinese Journal of Applied Chemistry, ;2007, 24(11): 1343-1345. shu

Separation of Metalaxyl Enantiomers by Capillary Electrophoresis with Conductive Detection

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a Department of Chemistry, MianYang Normal University, Mianyang 621000;
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b The 4th Institute of CARDC, MianYang;
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c School of Chemistry and Chemical Engineering, Zhongshan University, Guangzhou

Corresponding author: HUANG Bao-Mei,
Received Date: 6 November 2006
Available Online: 8 January 2007

A separation method for Metalaxyl enantiomers by capillary electrophoresis with conductive detection was developed. The effect of running buffer, pH, the concentration of the chiral selector β-CD, separation voltage and injection time were discussed in detail. Under the following separation conditions: uncoated fused silica capillary(45 cm×75 μm) as separation channel, 5 mmol/L Na₂B₄O₇.H₂O-2 mmol/L H₃BO₃-4 mmol/L β-CD(pH=9.0) as running buffer, and 15 kV separation voltage, linear correlation was found between the peak height(y) and the mass concentration of R-Metalaxyl(x) in the range of 5.0~120.0 mg/L, with the regression equation y=6.1+24.3xA, and the correlation coefficient was 0.998 2, and the determination limit was 1.5 mg/L; linear correlation was found between the peak height and the mass concentration of S-Metalaxyl(x) in the range of 10.0~150.0 mg/L, with the regression equation y=4.1+18.9x, and the correlation coefficient was 0.998 6, and the determination limit was 5.0 mg/L.
- capillary electrophoresis,
- Metalaxyl,
- enantioseparation,
- conductive detection
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