Abstract：Acid-solution was used to digest the copper matte sample, and then hydride generation-atomic fluorescence spectrometry was employed to determine the arsenic content in the sample. The sample digestion method, various factors that influence the spectral measurement, and the interference from coexisting elements were discussed. The results showed that when the mixed acid of hydrochloric acid-nitric acid-sulfuric acid was used to dissolve sample, thiourea-ascorbic acid was used as masking agent and prereduction agent, the coexisting elements did not significantly interfere the determination. The concentration of arsenic in the range of 0-100 μg/L exhibited good linearity, and the detection limit of the method was 0.05 μg/L. The method was applied to the analysis of actual samples, and the measured results were consistent with those obtained by inductively coupled plasma atomic emission spectrometry, with the relative standard deviation (n=11, RSD) being less than 7%, and the recovery being 90%- 95%.
武素茹, 王虹, 李权斌, 马德起, 苏明跃, 王昊云. 氢化物发生-原子荧光光谱法测定冰铜中砷[J]. 冶金分析, 2014, 34(1): 67-70.
WU Su-ru, WANG Hong, LI Quan-bin, MA De-qi, SU Ming-yue, WANG Hao-yun. Determination of arsenic in copper matte by hydride generation-atomic fluorescence spectrometry. , 2014, 34(1): 67-70.
