Determination of Dispersed Elements in Copper Ores by Microwave Digestion and inductively Coupled Plasma Mass Spectrometry.

Gallium, indium, cadmium, selenium, tellurium, germanium, thallium and other rare disperse elements are often present in copper deposits, and accurate analysis of these elements is beneficial to comprehensive utilization of minerals. The determination of Ga,Ge,In,Tl,Se,Te and Cd in copper ore by microwave digestion and inductively coupled plasma mass spectrometry was established. The symmetric sample size, acid system, ethanol concentration, microwave digestion work conditions and mass spectrum interference were optimized. The results show that under optimized conditions, the linear correlation coefficient of the calibration curve is greater than 0. 999 5, and the detection limit is 0.002~0. 19, µg/g. The relative standard deviations (RSD, n = 6) are 2. 63%~13. 84%, and the standard recoveries are 90. 4%~110. 6%. The method is accurate and reliable, and the results are consistent with the standard method. [ABSTRACT FROM AUTHOR]