【摘要】 目的:建立以高效液相色谱-荧光检测法测定美托洛尔血药浓度的方法。方法:色谱柱为Symmetry C18,流动相为乙腈-水-三乙胺-磷酸(110:390:2.5:1.6),荧光检测波长为激发波长(Ex)=265nm、发射波长(Em)=298nm,流速为0.8mL.min-1,进样量为20μL。结果:美托洛尔血药浓度在2.0～100.0μg.L-1范围内线性关系良好(r=0.9996);低、中、高3种浓度的平均相对回收率分别为99.73%、98.21%、99.38%,日内RSD分别为2.89%、2.36%、1.32%,日间RSD分别为3.73%、3.03%、2.25%,最低检测限为1.0μg.L-1。结论:本方法精密、准确、特异性强、回收率高、操作简便,适用于临床血药浓度监测及药动学研究。更多还原

【Abstract】 OBJECTIVE:To establish a HPLC-fluorescence detection method for the determiniation of the serum concentration of metoprolol.METHODS:The determination was performed on Symmetry C18 column,and the mobile phase consisted of acetonitrile-water-triethylamine -phosphoric acid(110∶390∶2.5∶1.6) at a flow rate of 0.8 mL·min-1.The excitation wavelength was 265 nm and the emission wavelength 298 nm,and the sample size was 20 μL.RESULTS:Good linearity was obtained for metoprolol over the range of 2.0～100.0 μg·L-1 with correlation coefficient r=0.999 6.At low,medium and high concentrations,the average recoveries of metoprolol were 99.73%,98.21% and 99.38%,respectively.The intra-day RSD were 2.89%,2.36% and 1.32%,respectively,and the inter-day RSD were 3.73%,3.03% and 2.25% respectively.The lowest detectable limit was 1.0 μg·L-1.CONCLUSION:This method is precise,accurate,specific,simple yet with high recovery,and it is applicable for clinical monitoring of blood concentration and pharmacokinetic study.更多还原