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前言痕迹量铋的测定是金属分析中一项常有的项目,自以采用吸光度法最为方便。但现今常用的几种方法均不理想。硫脲法不够灵敏;碘化钾法干扰较多,须防止空气中氧的氧化作用,不便操作;二苯硫腙法虽极灵敏,但多干扰;二乙胺基二硫代甲酸钠法虽具灵敏度高与干扰少的优点,但不稳定。本文特就新的定铋方法作一介绍。
Preface Trace Determination of bismuth is a common item in metal analysis, since the most convenient method of absorbance. However, several methods commonly used today are not ideal. Thiourea method is not sensitive enough; potassium iodide interfere more, to prevent the oxidation of oxygen in the air, inconvenient to operate; diphenylhydrazone method is very sensitive, but more interference; although diethyldithiocarbamate method with high sensitivity The advantages of less interference, but not stable. This article special on the new method of bismuth made an introduction.