RP-HPLC同时测定马钱子散中士的宁和马钱子碱的含量

Determination of strychnine and brucine in maqianzi san by RPHPLC

目的：建立马钱子散中士的宁和马钱子碱的反相高效液相色谱分析法。方法：色谱柱μＢｏｎｄａｐａｋＣ１８（１０μｍ，４ｍｍ×３００ｍｍ）；流动相为甲醇水乙酸三乙胺（７０∶２３０∶２．４∶０．３）；流速１．２ｍｌ·ｍｉｎ－１；检测波长２５４ｎｍ。结果：士的宁线性范围０．０３６７２μｇ～０．０６１２μｇ，回收率ｘ１＝１００．３６％，ＲＳＤ１＝１．０９％；马钱子碱线性范围０．９４５０μｇ～０．１５７５μｇ，回收率ｘ２＝１００．０１，ＲＳＤ２＝１．４６％。结论：该分析法为一种灵敏、准确和简便的分析法。

OBJECTIVE: To develop a HPLC method for assaying strychnine and brucine in traditional Chinese drug Maqianzi San. METHODS: With μBondapak C18 (10 μm) column (4 mm×300 mm), MeOHH2OHAc(C2H5)3N(70∶230∶2.4∶0.3) as mobile phase, we set a detector at 254 nm. RESULTS: Linear range of strychnine and brucine was 0.367 2 μg～0.061 2 μg and 0.945 0 μg～0.157 5 μg respectively. The recovery rate of strychnine and brucine was 100.36% (RSD=1.09%) and 100.01% (RSD=1.46%) respectively. CONCLUSION: This method provides a simple and feasible way to control the quality of Maqianzi San.