高效液相色谱法测定人血浆中盐酸氨溴索浓度

目的 :建立测定盐酸氨溴索血药浓度的方法。方法 :采用高效液相色谱法 ,以盐酸地尔硫为内标 ,色谱柱采用HypersilBDSC18 不锈钢柱 (250mm×4 6mm ,5μm ) ,流动相为乙腈 -甲醇 -0 01mol/L磷酸盐缓冲液 (pH7 0) -四氢呋喃 (35∶35∶27 5∶2 5) ,流速为1 0ml/min ,检测波长为242nm。9名健康男性志愿者 ,单剂量口服进口盐酸氨溴索片后 ,测定其血浆中药物浓度。结果 :线性范围为10～640ng/ml,最低检测浓度为10ng/ml ,提取回收率均大于90 %。9名志愿者的血药浓度数据经3p87拟合 ,符合血管外给药一室模型 ,Cmax= (226 53±34 59)ng/ml ,Tmax= (1 82±0 80)h ,T1/2ke= (6 27±0 66)h ,AUC0～24=(2363 55±448 86) (ng·h)/ml。结论 :本方法简单 ,灵敏度和准确度较高 ,能满足人体药动学研究的需要。

Determination of the Concentration of Ambroxol Hydrochloride in Human Plasma with RP-HPLC

OBJECTIVE:A RP-HPLC method was established to determine the concentration of ambroxol hydrochloride in human plasma.METHODS:Waters HPLC instrument was used with the Hypersil BDS C 18 column(5μm,250mm×4.6mm). Ditiazem hydrochloride was chosen as the internal standard.The mobile phase was composed of acetonitrile-methyl alcohol-0.01mol/L phosphatic buffer(pH7.0)-tetrahydrofuran(35∶35∶27.5∶2.5).Flow rate was1.0ml/min.Detection wavelength was242nm.A single oral dose of90mg imported ambroxol hydrochloride tablet was given to9healthy male volunteers.Ambro xol concentration in plasma was assayed.RESULTS:The standard curve of ambroxol hydrochloride was linear in the range of10～640ng/ml.The minium detection concentration was10ng/ml.The extraction recovery was more than90%.A one-compartment open pharmacokinetic model was adopted in ambroxol plasma concentration-time data analysis.The main pharmac okinetic parameters were as follows:C max =(226.53±34.59)ng/ml,T max =(1.82±0.80)h,T 1/2ke =(6.27±0.66)h,AUC 0～24 =(2363.55±448.86)ng/(h·ml).CONCLUSION:The method is simple.The sensitivity and accuracy are high.It is applicable to study the pharmacokinetics of ambroxol hydrochloride in healthy male volunteers.