本文介绍了一种简单迅速的络量法测定药物制剂PyublHcknx中鉍的含量,该法准确性与一般测定方法的准确性相符合。方法原理:含鉍的油制剂在氯仿存在下加入稀硝酸,于是油和有机酸移天氯仿层,而有机鉍盐不溶于氯仿层,与硝酸形成硝酸鉍转入水中,在pH=1时以络合剂 This article presents a simple and rapid method for the determination of the amount of bismuth in the drug formulation PyublHcknx, which is consistent with the accuracy of the general method. Principle of the method: The bismuth-containing oil preparation is added with dilute nitric acid in the presence of chloroform so that the oil and the organic acid migrate to the chloroform layer, whereas the organic bismuth salt does not dissolve in the chloroform layer and forms nitric acid with bismuth nitrate and turns into water. At pH = 1 Complexing agent