用198Au示踪法研究季铵盐体系萃取金

用198Au示踪法研究季铵盐体系萃取金

TQ02; The solvent extraction of KAu(CN)2 from alkaline solution by quaternary ammonium salts (trialkylmethylammonium chloride or cetyltrimethylammonium bromide) was investigated by means of 198Au radioactive tracer method. Various parameters, such as the gold (Ⅰ) concentration in aqueous phase, the...

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Veröffentlicht in:中国化学工程学报(英文版) 2002, Vol.10 (1), p.33-38
Hauptverfasser: 张天喜, 周维金, 高宏成, 陈景, 吴瑾光
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container_title 中国化学工程学报(英文版)
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creator 张天喜
周维金
高宏成
陈景
吴瑾光
description TQ02; The solvent extraction of KAu(CN)2 from alkaline solution by quaternary ammonium salts (trialkylmethylammonium chloride or cetyltrimethylammonium bromide) was investigated by means of 198Au radioactive tracer method. Various parameters, such as the gold (Ⅰ) concentration in aqueous phase, the modifier, emulsification at the interface of two phases, and phase ratio used in the extraction of gold (Ⅰ) were studied. The results demonstrate that almost all gold (Ⅰ) in the aqueous phase was practically extracted into the organic phase. The water content in the organic phase decreased significantly with increase of gold (Ⅰ) concentration using long chain alcohol as modifier, in contrast with the system with tributyl phosphate (TBP) as modifier. Emulsification at the interface of two phases decreases with an increase of modifier concentration in the organic phase or with the addition of a small amount of lysozyme into the aqueous phase. The method with 198Au tracer can be directly used to determine the Au(Ⅰ) co
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Various parameters, such as the gold (Ⅰ) concentration in aqueous phase, the modifier, emulsification at the interface of two phases, and phase ratio used in the extraction of gold (Ⅰ) were studied. The results demonstrate that almost all gold (Ⅰ) in the aqueous phase was practically extracted into the organic phase. The water content in the organic phase decreased significantly with increase of gold (Ⅰ) concentration using long chain alcohol as modifier, in contrast with the system with tributyl phosphate (TBP) as modifier. Emulsification at the interface of two phases decreases with an increase of modifier concentration in the organic phase or with the addition of a small amount of lysozyme into the aqueous phase. 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title 用198Au示踪法研究季铵盐体系萃取金
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