高效液相色谱法测定普罗帕酮血浆浓度

本文建立了高效液相色谱法测定人体内普罗帕酮血浆浓度。以YWG-C_(18)(10μm)为固定相,改性甲醇-乙腈-醋酸盐缓冲液(45.5:19.5:35)为流动相,用达克罗宁作内标在254nm波长处定量测定。方法最低检测限为5ng(S/W=3),血浆中最低检测浓度为25ng/ml,普罗帕酮血浆浓度在50～500ng/ml范围内线性关系良好,方法回收率为100.5％,不同浓度水平测定蛄果的日内和日间变异系数均小于3％。方法重现性好,专一性强,内源性物质不干扰,操作简便,快速,能适合梏床血药浓度监测及药代动力学研究。

Determination of Propafenone Concentration in Human Plasma by High-performance Liquid Chromatography

A rapid and simple HPLC method for determination of propafenone concentration in human plasma is described. Dyclonine hydrochloride was used as an internal standard. YWG-C_(18) column(10μm)was used with a mobile phase of methanol-acetonitrile-0.05mol/L acetate buffer(pH 4.02)-diethylamine(45.5:19.5:35). Detection was performed by ultraviolet absorption at 254nm. The detection limit of propafenone waw 5ng (S/W=3)or 25ng/ml in plasma. Assay linearity was shown in a range of 50～500ng/ml with a regression coefficient of 0.9993. The recovery(n=4)was 100.5％,the CV of within-day and day-to-day being less than 3％. No interference was found from endogenous compounds or commonly used drugs. So it can be applied to pharmacokinetic studies and therapeutic monitoring.