反相高效液相色谱法测定血浆中芍药甙的含量

Content Determination of Paeoniflorin in Blood Plasma with Reversed-phase High-efficiency Liquid Chromatography

建立了血浆中芍药甙的分析方法,线性关系良好,r=0.9998。选定间羟基苯甲酸为内标。以内标加校正因子定量可以提高方法精密度。校正因子的测定结果符合《中国药典(1990年版)》中色谱法的规定。方法平均回收率97.13％,最低检测量为5.6ng;日内变异系数为0.39％,日间变异系数为1.17％。本方法为芍药甙的体内样品分析提供了一种简便可行的方法。同时,利用该法对含芍药的百合固金汤冲剂进行了家兔体内吸收的初步考察。

The method, established for analysis of paeoniflorin in blood plasma, appeared a good linear relationship(r=0.9998). Using meta-hydroxybenzoic acid as internal standard and calibration factor combined, the quantitation precision of method could be raised. The result of determination of calibration factor conformed with the chromatography prescriptions in 'Pharmacopoeia of China' (edited in 1990). The average recovery reached up 97.13％. The minimum detection amount was 5.6ng. The coefficients of within-day and between-day variation were 0.39％ and 1.17％, respectively. This method is suitable for paeoniflorin analysis of in vivo sample . At present,the in vivo absorption of Baihegujintang Granules (containing Radix Paeoniae alba or Radix Paeoniae rubra) by rabbit is preliminarily investigated utilizing this method.