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Citation: JIANG Jian-Zhun, GAO Hong-Cheng, ZHOU Wei-Jin, WU Jin-Guang, XU Guang-Xian, CHEN Jing. Solvent Extraction of Trace Gold(Ⅰ) from Alkaline Cyanide Solution by ¹⁹⁸Au Radioactive Tracer Method[J]. Chinese Journal of Applied Chemistry, ;2002, 19(3): 267-270. shu

Solvent Extraction of Trace Gold(Ⅰ) from Alkaline Cyanide Solution by ¹⁹⁸Au Radioactive Tracer Method

1.
a College of Chemistry and Molecular Engineering, Peking University, Beijing 100871;
2.
b Institute of Precious Metals, Kunming

Corresponding author: GAO Hong-Cheng,
Received Date: 11 July 2001
Available Online: 4 December 2001
Fund Project:

Solvent extraction of trace concentration of gold(Ⅰ) from alkaline cyanide solution by extractants, tetra decyldi methyl benzyl ammonium chloride(TDMBAC), primary amine N1923, tri-n-octylamine(TOA) has been carried out by using a ¹⁹⁸Au radioactive tracer method. The influences of gold concentration, the molar ratio of extractant to Au(CN)₂^-, volume percentage of synergic reagent, phase volume ratio and salting-out agent have been studied. The results indicate that ¹⁹⁸Au radioactive tracer method is a quick, convenient, accurate method especially for extraction of trace concentration of gold. When the molar ratio of TDMBAC to gold (0.1 mg/L) is more than 50, the extraction percentage reaches 95%. The extraction percentage does not change much with the further addition of synergic reagent TBP(tributyl phosphate) after its volume percentage reaches 20%. Salt has little effect on the gold extraction. Stripping extraction of gold from such loaded organic phases was also discussed.
- ¹⁹⁸Au radioactive tracer method,
- Au,
- amine extractant,
- solvent extraction
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Solvent Extraction of Trace Gold(Ⅰ) from Alkaline Cyanide Solution by 198Au Radioactive Tracer Method

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通讯作者: 陈斌, bchen63@163.com

Solvent Extraction of Trace Gold(Ⅰ) from Alkaline Cyanide Solution by ¹⁹⁸Au Radioactive Tracer Method