Acta Scientiarum Naturalium Universitatis Pekinensis

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Partition of Gold (Ⅰ) Cyanide in Polyethylene Glycol Based Aqueous Biphasic Systems

ZHANG Tianxi1，LI Wenjun1，ZHOU Weijin2，GAO Hongcheng2, CHEN Jing3, WU Jinguang1   

  1. 1State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871; 2Department of Technical Physics, Beijing, 100871; 3Institute of Precious Metals, Kunming, 650221
  • Received:2000-06-20 Online:2001-03-20 Published:2001-03-20

基于双水相体系的KAu(CN)2分配行为

张天喜1,李文钧1,周维金2,高宏成2,陈景3,吴瑾光1   

  1. 1北京大学化学与分子工程学院，稀土材料化学及应用国家重点实验室，北京, 100871；2北京大学技术物理系，北京，100871；3昆明贵金属研究所，昆明, 650221

Abstract: The partition of gold (Ⅰ) cyanide in aqueous biphasic systems (PEG/Na2SO4)has been investigated. Almost all of gold (Ⅰ) was in the rich-PEG phase. The aqueous biphasic systems have high capability of extraction. The electrical conductivity of rich-PEG phase decreases with the increase of gold (Ⅰ) concentration. FT-Raman spectra show that there is no strong interaction between PEG and gold (Ⅰ) cyanide.

Key words: aqueous biphasic system, PEG, gold(Ⅰ) cyanide, partition, FT-Raman

摘要： 报导了KAu(CN)2在聚乙二醇(PEG)/硫酸钠双水相体系中的分配行为。实验考察水相金浓度对KAu(CN)2分配影响。结果表明：富硫酸钠相(下相)的KAu(CN)2几乎全部转移到富PEG相(上相)。在上相，随KAu(CN)2含量增加，电导率下降。FT-Raman光谱表明，KAu(CN)2与PEG可能没有强的相互作用。双水相体系为金分离提供了一种新方法。

关键词: 双水相, 聚乙二醇, KAu(CN)2, 分配, FT-Raman

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