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| Successive Determination of Cu, Ag and Zn in High Purity Bismuth by Flame Atomic Absorption Spectrometry |
| Received:October 15, 2014 Revised:November 13, 2014 |
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| DOI：doi:10.3969/j.issn.2095-1035.2015.01.016 |
| KeyWord:bismuth; flame atomic absorption spectrometry; trace; copper;silver;zinc |
| Author | Institution |
| DING Aimei |
湖南株洲冶炼集团股份有限公司 质保部，湖南 株洲 |
| ZHANG Dongguang |
湖南株洲冶炼集团股份有限公司 质保部，湖南 株洲 |
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| Abstract: |
| A method for the successive determination of Cu, Agand Zn in high purity bismuth was developed by flame atomic absorption spectrometry. After the sample was pretreated by dissolving with nitric acid, it was determined by air-acetylene flame absorption spectrometry with Cu 324.7nm, Ag 328.1nm and Ni 213.8nm as analytical lines in the diluted hydrochloric acid medium. Under the optimized experimental conditions, the linear correlations between concentration and absorbance of Cu, Ag and Ni were satisfied with the concentration ranges of 0.20~0.80mg/L, 0.5～2.0 mg/L and 0.10~0.40 mg/L, respectively. The recoveries were 94.5%~101.8% (Cu), 97.3%~102.6% (Ag), and 96%~106.3% (Ni).. The relative standard deviations (RSDs, n=11) were all less than 8% and the results were consistent with reference values. |
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