| 聚酰胺富集双波长光度法同时测定金和银 |
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| 引用本文： | 石威.聚酰胺富集双波长光度法同时测定金和银[J].光谱学与光谱分析,1998,18(2):244-246. |
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| 作者姓名： | 石威 |
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| 作者单位： | 中科院长春应作化学研究所 |
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| 摘 要： | 本文研究了聚酰胺树脂的吸附性能，发现Ａｕ和Ａｇ蝗形成稳定的硫氰酸络阴离子。在稀硝酸介质中吸附于聚酰胺树脂进行富集并与大部分贱金属元素分离。采用Ｎａ２ＳＯ３作为解脱剂，可以定量解脱树脂上的Ａｕ和Ａｇ而树脂不被破坏可以反复使用。
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| 关 键 词： | 金 银 聚酰胺 双波长光度法 富集 测定 |
ENRICHMENT WITH POLYAMIDE AND DUAL WAVELENGTH SPECTROPHOTOMETRIC DETERMINATION OF GOLD AND SILVER |
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| W Shi.ENRICHMENT WITH POLYAMIDE AND DUAL WAVELENGTH SPECTROPHOTOMETRIC DETERMINATION OF GOLD AND SILVER[J].Spectroscopy and Spectral Analysis,1998,18(2):244-246. |
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| Authors: | W Shi |
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| Institution: | Changchun Institute of Applied Chemistry, Academia Sinica, National Analytical Research Center of Electrochemistry and Spectroscopy, 130022 Changchun. |
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| Abstract: | The absorbent performance of polyamide resin has been studied. Au(III) and Ag(I) easily react with SCN]- to form complex anions in dilute nitric acid medium, and be adsorbed on the polyamide resin to enrich, and be separated from many other base metals. When Na2SO3 and NH3 x H2O is used as eluating agent, Au and Ag can be recovered quantitatively. Therein can be retreated and reused easily. In addition, we established a dual-wavelength spectrophotometric method which has been applied to the determination of Au(III) and Ag(I) in standard samples with relative standard deviation of less than 5.1%. |
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| Keywords: | Gold Silver Polyamide Dual Wavelength spectrophotometry |
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