WEI Ying-qin, LU Heng, LIU Xin-xin, et al. Determination of Guanosine in Pinelliae Rhizoma by Capillary Zone Electrophoresis with Internal Standard Method[J]. Chinese journal of experimental traditional medical formulae, 2011, 17(18): 49-51.
WEI Ying-qin, LU Heng, LIU Xin-xin, et al. Determination of Guanosine in Pinelliae Rhizoma by Capillary Zone Electrophoresis with Internal Standard Method[J]. Chinese journal of experimental traditional medical formulae, 2011, 17(18): 49-51. DOI: CNKI:11-3495/R.20110721.1733.005.
Objective: To develop the capillary zone electrophoresis (CZE) method for quantitative analysis of guanosine in Pinelliae Rhizoma using aciclovir as internal standard. Method: A fused silica capillary (57 cm×75 μm ID
an effective length of 50 cm) was used.The running buffer was composed of 0.8 mol ·L-1 boric acid
0.1 mol ·L-1 borate and acetonitrile (50∶50∶13) with pH adjusted to 9.0.The applied voltage was 25 kV and the capillary temperature was 25 ℃. The detection wavelength was at 254 nm. Result: Good linearity was found in the range of 0.25-1.5 mg for guanosine with r=0.999 1.The average recovery was 102.0% for guanosine with the relative standard deviation 2.4% (n=5). Conclusion: The method is simple and accurate to determine guanosine in Pinelliae Rhizoma.