绿色矿冶

In this paper, the content of indium and germanium in white dust was detected by inductively coupled plasma atomic emission spectrometry. The sample was dissolved by HCl-HNO3 system, and the furnace temperature and reagent addition time were strictly controlled to make the sample completely dissolved and clarified. Indium germanium standard solution was prepared, and ICP-AES instrument was used to select indium and germanium spectral lines and correct interference. The method is simple, rapid, accurate, sensitive, and has good precision and accuracy. The detection limits of germanium and indium are 0.043μg/mL and 0.020μg/mL, respectively. The relative standard deviation ( n =7) is 1.0%~2.0%, and the recovery rate is 95.61%~99.15%. It can detect the content of indium and germanium in whitedust of copper smelter.