| 用198Au示踪法研究季铵盐体系萃取金 |
| |
| 引用本文： | 张天喜,周维金,高宏成,陈景,吴瑾光.用198Au示踪法研究季铵盐体系萃取金[J].中国化学工程学报,2002,10(1):33-38. |
| |
| 作者姓名： | 张天喜 周维金 高宏成 陈景 吴瑾光 |
| |
| 作者单位： | [1]StateKeyLaboratoryofRareEarthMaterialsChemistryandApplications,CollegeofChemistryandMolecularEngineering,PekingUniversity,Beijing100871 [2]InstituteofPreciousMetals,Kunming650221 |
| |
| 基金项目： | Supported bv National Natural Science Foundation of China (No. 39730160, No. 20023005). |
| |
| 摘 要： | The solvent extraction of KAu(CN)2 from alkaline solution by quaternary ammonium salts (trialkylmethylammonium chloride or cetyltrimethylammonium bromide) waw investigated by means of ^198Au radioactive tracer method. Various parameters,such as the gold (I) concentration in aqueous phase,the modiffer,emulsifiation 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) concentration both in aqueous and organic phases, which is especially suitable for the low concentration of Au(I).
|
| 关 键 词： | 季铵盐 氰化金 溶剂萃取 示踪剂 三烷基甲基氯化铵 |
| 修稿时间： | |
Studies on the Extraction of Gold (Ⅰ) Cyanide by Quaternary Ammonium Salt Using 198Au as Tracer |
| |
| ZHANG Tianxi,ZHOU Weijin,GAO Hongcheng,CHEN Jing,WU Jinguang.Studies on the Extraction of Gold (Ⅰ) Cyanide by Quaternary Ammonium Salt Using 198Au as Tracer[J].Chinese Journal of Chemical Engineering,2002,10(1):33-38. |
| |
| Authors: | ZHANG Tianxi ZHOU Weijin GAO Hongcheng CHEN Jing WU Jinguang |
| |
| Affiliation: | State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 Institute of Precious Metals, Kunming 650221 |
| |
| Abstract: | The solvent extraction of KAu(CN)2 from alkaline solution by quaternary ammonium salts (trialkyl-methylammonium 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) concentration both in aqueous and organic phases, which is especially suitable for the low concentration of Au(I). |
| |
| Keywords: | solvent extraction gold (I) cyanide 198Au tracer trialkylmethylammonium chloride cetyltrimethy- lammonium bromide |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《中国化学工程学报》浏览原始摘要信息 |
|
点击此处可从《中国化学工程学报》下载全文 |
|
