Indirect determination of chlorine in chambersite by inductively coupled plasma atomic emission spectrometry
NI Wen-shan1,2,LIU Yu-lin1,2, MAO Xiang-ju1,2
1. Zhengzhou Institute of Multipurpose Utilization of Mineral Resources,CAGS,Zhengzhou 450006,China; 2.China National Engineering Research Center for Utilization of Industrial Minerals,Zhengzhou 450006,China
A novel method for indirect determination of chloride in chambersite by inductively coupled plasma atomic emission spectrometry (ICP-AES) was established. HNO3 was used to dissolve mineral samples and an extra amount of AgNO3 solution was added to the sample solution for the precipitation of AgCl. After the solution was transparent, remaining Ag in the solution was determined by inductively coupled plasma atomic emission spectrometry (ICP-AES) with spectral line of wavelength 328.068{102} nm as analysis line. By calculation, chloride in chambersite was indirectly determined. The experiment indicated the atomic emission strength of Ag had excellent linear relationship with ρ(Ag) in the range of 0-40 μg/mL. The method was used for determining chloride in chambersite, with recoveries of 98.8%-99.6% and RSD (n=6) of 0.11%-0.54%.
