Analysis of Disopyramide by HPLC with Uv Detection

Abstract

A simple and sensitive method has been developed for the determination of disopyramide employing reverse phase high performance liquid chromatography with UV detection. p-Chlorodisopyramide was used as an internal standard. The retention times of disopyramide and the internal standard at an elution rate of 1.8 ml/min were 6.28 and 8.78 min, respectively.     

毛细管电泳电化学发光用于丙吡胺及其与血浆蛋白结合率的测定

本实验利用透析袋平衡透析、毛细管电泳Ru(bpy)2+3电化学发光检测技术测定了丙吡胺和人血浆蛋白的结合率.在恒电位1.3 V;进样电压10 kV持续10 s,分离电压15 kV,运行缓冲液30 mmol/L 磷酸盐缓冲液(pH 7.5),检测池中为5 mmol/L Ru(bpy)2+3 稀释于50 mmol/L 磷酸盐缓冲液(pH 7.5)中等最优化的条件下,丙吡胺的检出限为10 μmol/L(S/N=3).对蛋白结合率的测定结果表明,人血浆中的药物浓度为1.6～8.2 mmol/L,丙吡胺与血浆蛋白的结合是呈线性的,其线性回归方程为y=-0.07+0.93x,线性相关系数r为0.9999,丙吡胺与人血浆蛋白的结合率约为90.4%.