Determination of silver in copper matte and copper-bearing sintering materials by inductively coupled plasma atomic emission spectrometry and flame atomic absorption spectrometry
WANG Cheng1, ZHAO Shu-yun2, XIAO Li-mei3
1.Xinjiang Entry-Exit Inspection and Quarantine Bureau, Urumqi 830063, China; 2. College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China; 3.Xinjiang Zhonghe Co.,Ltd.(China), Urumqi 830021,China
Abstract：The copper matte and copper-bearing sintering materials were decomposed by hydrochloric acid and nitric acid at low temperature. Then, the content of silver was determined by inductively coupled plasma atomic emission spectrometry (ICP-AES) and flame atomic absorption spectrometry (FAAS). Based on the characteristics of these materials, the effect of sample dissolution conditions, coexisting elements and matrix on determination of silver was investigated. Meanwhile, the accuracy, precision and detection limit of method were discussed. The experimental results showed that the determination results of silver in imported copper matte and copper-bearing sintering materials by these two methods had no significant difference. These two methods had high accuracy and precision. The recoveries of standard addition of ICP-AES and FAAS were 94 %-101 % and 96 %-108 %, respectively. The relative standard deviations (RSD) were less than 3.4 %.
