Abstract
Ordinary polarography was introduced to our company in 1949 for the analysis of lead and cadmium in zinc, copper and zinc in ore and has been used for the analysis of metallurgical products and others.It has recently been ascertained too by our experiments that square wave polarographic method is superior to the ordinary polarographic method for the determination of minute quantity elements in high purity metal. In this paper, outline of square wave polarography was described with the reference of the reports of Barker, Miler and others and then practical use in our laboratory was described. For instance: the analytical method of zin in cadmium; Copper and lead in high purity tin or selenium; bismuth and lead in silver; bismuth, copper and lead in gold; tellurium in crude copper, selenium and silver; lead, Copper and cadmium in zinc. By the use of square wave polarographic method, time for the analysis of impurities in high pure metal were saved and reliabilty for the analytical results of minute quantities were increased in our daily work.
