Abstract：A sensitive colour reaction takes place between three-bromine arsenazo and rare earth elements in HC1 of 1.0 mol/L, forming stable complexes. Thus three-bromine arsenazo can be used as a color reagent to test the amount of REE in the photometry method. The analysis for two standard samples shows the precisions of 2.82% and 2.57%, and theaccuracies of -2.34% and -5.82% respectively. The method is satisfactorily applied in analysis for ores.
贾宇晶, 李清昌, 王飞. 三溴偶氮胂分光光度法测定稀土元素的研究[J]. 地质与资源, 2005, 14(2): 151-153,160.
JIA Yu-jing, LI Qing-chang, WANG Fei. STUDY ON THE ANALYSIS OF RARE EARTH ELEMENTS WITH THREE-BROMINE ARSENAZO PHOTOMETRY. GEOLOGY AND RESOURCES, 2005, 14(2): 151-153,160.
2005, Vol. 14 
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