Determination of major and minor elements in copper ore by X-ray fluorescence spectrometry.
LI Xiao-li, TANG Li-jun, HUANG Jin-chu
(1.TianJin Institute of Geological and Mineral Resource,Tianjin 300171;
2.National Geological Testing Center,Beijing 100000; 3.Chengdu Institute of Technology,Chengdu,Sichuan 610000)
Abstract：The measurement of thirteen major and minor elements in copper ore by fusion disk-preparation X-ray fluorescence spectrometry (XRF) was investigated in the paper. In order to effectively prevent the evaporation of S in the fusion process, the types and quantity of the flux, oxidant, release-agent were checked and chosen. The temperature and time for pre-oxidation and fusion were also studied. The spectral line, matrix effect and spectrum-line overlap correction were discussed in detail. It was showed that, due to the addition of oxidant Sr(NO3)2, the most effective oxidant, the Pt-Au crucible was well protected from corrosion and thus S was accurately analyzed. Besides, the Sr could be used as internal standard for Cu at the same time, so the precision and accuracy of Cu were much improved. The measuring results of major and minor elements in copper ore by XRF by fusion disk XRF method were consistent with those by reference value, indicating that the above method could be effectively applied in the measurement of multi-elements in copper ore.
李小莉，唐力君，黄进初 . X射线荧光光谱熔融片法测定铜矿中的主次元素[J]. 冶金分析, 2012, 32(7): 67-70.
LI Xiao-li, TANG Li-jun, HUANG Jin-chu. Determination of major and minor elements in copper ore by X-ray fluorescence spectrometry.. , 2012, 32(7): 67-70.
