| 关于方铅矿中银的赋存状态分析方法的商榷 |
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| 引用本文： | 吴善浒.关于方铅矿中银的赋存状态分析方法的商榷[J].矿物学报,1989,9(2):174-176. |
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| 作者姓名： | 吴善浒 |
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| 作者单位： | 冶金部天津地质部研究院 |
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| 摘 要： | 《矿物学报》1984年第二期上发表了用EDTA-NH_4OH、H_2O_2溶解方铅矿测定其类质同象银的报道,实验证明用上述溶剂分解方铅矿时,溶解了的类质同象银(Ag~+)与反应产生的S~(2-)又重新生成Ag_2S沉淀,使类质同象银的结果显著偏低。本文提出加入NaCN可以防止Ag_2S沉淀生成。
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| 关 键 词： | 方铅矿 银 赋存 分析法 |
ON THE EXISTING FORMS OF SILVER IN GALENA |
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| Wu Shanhu.ON THE EXISTING FORMS OF SILVER IN GALENA[J].Acta Mineralogica Sinica,1989,9(2):174-176. |
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| Authors: | Wu Shanhu |
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| Abstract: | The dispersed silver isomorphously present in galena was separated by the mixture of EDTA-NH_4 OH-H_2O_2. Experimental results show that the dispersed silver could react with S~(z-) to precipitate Ag_2S when the galena was dissolved. Great errors would be involved in the analysis. This problem can be avoided by adding a little amount of sodium cyanide (NaCN) into the solvent. |
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| Keywords: | dispersed silver isomorphous silver Ag_2S precipitate |
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