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Citation: GAO Yun-Tao, WANG Wei. Distribution Behavior and Extraction Mechanism of Gold(Ⅲ) in Polyethylene glycol-Ammonium Sulphate Aqueous Biphasic System[J]. Chinese Journal of Applied Chemistry, ;2002, 19(6): 578-581. shu

Distribution Behavior and Extraction Mechanism of Gold(Ⅲ) in Polyethylene glycol-Ammonium Sulphate Aqueous Biphasic System

GAO Yun-Tao ^a,, ,
WANG Wei ^b

1.
a Department of Chemistry, Yunnan Nationalities University, Kunming 650031;
2.
b Kunming Institute of Precious Metals, Kunming

Corresponding author: GAO Yun-Tao,
Received Date: 8 October 2001
Available Online: 24 December 2001

The distribution behavior of haloid complexes of gold(Ⅲ) in the polyethylene glycol ammonium sulphate aqueous biphasic system have been investigated as function of the concentration of acids and ammonium sulphate and the kind of salts. The distribution ratio order of the three haloid complexes was found to be: D_Au(AuI₄^-) > D_Au(AuBr₄^-) > D_Au(AuCl₄^-). The extraction mechanism for gold(Ⅲ) was discussed based on the results of such as UV and IR spectra measurements.
- gold,
- polyethylene glycol,
- ammonium sulphate,
- haloidion,
- aqueous biphasic extraction,
- distribution behavior,
- mechanism
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