反相高效液相色谱法测定兔血浆中盐酸小檗碱的浓度

目的:建立血浆中盐酸小檗碱浓度的测定方法。方法:采用反相高效液相色谱内标法,色谱柱为DikmadiamonsilTMC18,流动相为乙腈-0.1mol/L磷酸二氢钾溶液-十二烷基硫酸钠(50∶50∶0.06),流速为1ml/min,检测波长为345nm,柱温为40℃,内标物为对二甲氨基苯甲醛。结果:盐酸小檗碱检测浓度在20.5～656ng/ml范围内线性关系良好(r=0.9999),平均回收率为99.14%,平均RSD为3.78%。结论:该方法灵敏度高、专属性强,可用于盐酸小檗碱的药动学研究。

Determination of Berberine Hydrochloride in Rabbit Plasma by RP - HPLC

OBJECTIVE:To establish RP-HPLC method for the determination of berberine hydrochloride in rabbit plasma.METHODS:RP-HPLC internal standard method was adopted in which Dikma diamonsil TM C 18 was used as chro-matographic column,the mobile phase was composed of acetonitrile-0.1mol/L potassium dihydrogen phosphate solution-sodium dodecyl sulphate(50∶50∶0.06)with flow rate at1ml/min,and the detection wavelength was345nm,the column temperature was40℃with paradimethylaminobenzal dehyde taken as the internal standard.RESULTS:Good linear relation-ship was achieved when the detection concentration of berberine hydrochloride was within the range of20.5～656ng/ml(r=0.9999),the average recovery rate was99.14%,and the mean RSD was3.78%.CONCLUSION:The method has high sen-sitivity and strong specificity,which can be used for the study of pharmacokinetic of berberine hydrochloride.