硒、碲常用硝酸-高氯酸溶矿,砷富集分离催化极谱测定,但遇到酸难溶、含铜镍高、干扰元素多的试样时,结果往往偏低。本文制定了一个焙烧富集、除铜分离,适合于酸难溶试样中微量硒碲催化极谱测定的新方法。为保证试样在高温下分解、捕集彻底和不致沾埚底,按图1预先制备试样。焙烧富集后用水浸取,干过滤,溶液保留测硒。沉淀采用氨水分离,使铜、镍成络离子留在溶液中,碲与铁、铝、钛等氢 Selenium and tellurium commonly used nitric acid - perchloric acid ore, arsenic enrichment separation catalytic polarography, but encountered acid insoluble, high copper and nickel, interference elements and more samples, the results tend to be low. In this paper, a new method for the determination of Trace Selenium and Tellurium catalyzed polarographic determination of acid-insoluble samples by roasting and enrichment and copper separation was developed. In order to ensure that the sample is decomposed at high temperature, capture completely and without sticking to the bottom, according to Figure 1 pre-prepared samples. After roasting enrichment leaching, dry filtration, the solution retained selenium. Precipitation using ammonia separation, so that copper, nickel ions in the solution remain in the solution, tellurium and iron, aluminum, titanium and other hydrogen