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| Determination of Mercury in Silver Concentrates by Stannous Chloride Reduction-Atomic Fluorescence Spectrometry |
| Received:November 09, 2017 Revised:January 19, 2018 |
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| DOI：doi:10.3969/j.issn.2095-1035.2018.02.001 |
| KeyWord:silver concentrate；mercury；atomic fluorescence spectrometry；tyrannous chloride |
| Author | Institution |
| wuxueying |
中国检验认证集团广西有限公司 |
| wei yajuan |
中国检验认证集团广西有限公司 |
| jiangjing |
中国检验认证集团广西有限公司 |
| yelingling |
中国检验认证集团广西有限公司 |
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| Abstract: |
| A method for determination of mercury in sliver concentrates by tyrannous chloride reduction-atomic fluorescence spectrometry has been developed. The sample was dissolved by hydrochloric acid and nitric acid respectively. The fluorescence intensity of mercury was measured by atomic fluorescence spectrometry using a hydrochloric acid solution (5%) as the carrier liquid and a stannous chloride solution (200g/L) as the reducing agent. The optimum working conditions, the types and concentrations of reductant, the modes of sample dissolution and the interference of coexisting elements were studied in detail. The result showed that the relative standard deviation of this method was 3.1%~9.1%, and the result was consistent with the result of the cold atomic absorption spectrometry. The accuracy and precision of this method can meet the detection requirements of silver concentrate samples, so it was worth popularizing. |
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