Korany M A, Seif El-Din A A
J Assoc Off Anal Chem. 1984 Jan-Feb;67(1):138-41.
A simple, rapid, and accurate method is presented for determining strychnine and brucine in nux vomica liquid extract. The 2 alkaloids are directly extracted from the alkaline liquid extract with 0.1N H2SO4, and the liberated alkaloids are determined separately using first derivative spectrophotometry. The minimum strychnine and brucine concentrations detectable by means of this method are 3.0 micrograms/mL. The method has been successfully applied to the analysis of 3 batches of nux vomica liquid extract.
本文介绍了一种简单、快速且准确的方法，用于测定马钱子流浸膏中的士的宁和马钱子碱。这两种生物碱直接从碱性流浸膏中用0.1N硫酸提取，释放出的生物碱用一阶导数分光光度法分别测定。用该方法可检测到的士的宁和马钱子碱的最低浓度为3.0微克/毫升。该方法已成功应用于3批马钱子流浸膏的分析。
