Gold Stripping from Loaded Organic Phases by Inorganic Salts

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Gold Stripping from Loaded Organic Phases by Inorganic Salts

JIANG Jianzhun¹, ZHOU Weijin¹, GAO Hongcheng¹, WU Jinguang¹, XU Guangxian¹, CHEN Jing²

¹College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871; ²Precious Metal Institute, Kunming, 650031

Received:2001-09-19 Online:2002-07-20 Published:2002-07-20

季铵盐载金有机相的反萃取研究
Ⅱ无机盐类反萃体系

姜健准¹, 周维金¹, 高宏成¹, 吴瑾光¹, 徐光宪¹, 陈景²

¹北京大学化学与分子工程学院，北京，100871; ²昆明贵金属研究所，昆明，650031

Abstract

Abstract: Gold(Ⅰ) Stripping from quaternary ammonium (TDMBAC) loaded-organic phase by inorganic salts such as NH₄SCN, NaClO₄ and KI was described by ¹⁹⁸Au radioactive tracer method. The effect of several variables such as stripping agent concentrations, the volume ratio of stripping agents to gold loaded organic phase and the continuous extraction after stripping was studied under 20℃. It is found that NH₄SCN and NaClO₄ are excellent stripping agents for both n-octanol and TBP system. The organic phase can be rebirth by KCl aqueous solution. The stripping efficiency was agreement with perchloride effect. The effect of cosolvent on the stripping percentage was also discussed.

Key words: gold, NH₄SCN, NaClO₄, stripping, ¹⁹⁸Au radioactive tracer method

摘要： 用放射性同位素¹⁹⁸Au示踪法研究了无机盐NH₄SCN, NaClO₄等对季铵盐载金有机相的反萃，考察了反萃剂的浓度、有机相与反萃剂的体积比等对反萃率的影响。讨论了有机相反萃后继续萃取的问题。结果表明，NH₄SCN, NaClO₄在较高浓度时都是很好的反萃剂，反萃效率符合高氯酸盐效应，反萃后有机相具备连续萃取的能力。

关键词: 金, NH₄SCN, NaClO₄, 反萃取, ¹⁹⁸Au放射性示踪法

CLC Number:

O611

JIANG Jianzhun,ZHOU Weijin,GAO Hongcheng,WU Jinguang,XU Guangxian,CHEN Jing. Gold Stripping from Loaded Organic Phases by Inorganic Salts[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

姜健准, 周维金, 高宏成, 吴瑾光, 徐光宪, 陈景. 季铵盐载金有机相的反萃取研究
Ⅱ无机盐类反萃体系[J]. 北京大学学报（自然科学版）.

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Gold Stripping from Loaded Organic Phases by Inorganic Salts

季铵盐载金有机相的反萃取研究
Ⅱ无机盐类反萃体系

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Gold Stripping from Loaded Organic Phases by Inorganic Salts

季铵盐载金有机相的反萃取研究Ⅱ无机盐类反萃体系

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Abstract

Cite this article

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季铵盐载金有机相的反萃取研究
Ⅱ无机盐类反萃体系