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《Gold》 1989-03
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Extraction of gold by using PSO-ⅢA(3) sulfoxide and it's mechanism

Cheng Fei and Long Tiwu (Department of Chemistry, South China University of Science and Engineering, Guangzhou)  
Tervaleat Au was extracted as HAuCl4 by PSO-ⅢA(3)-a constituent of petroleum sulfoxide(ISO-type Ⅱ),and the effect of diluent,acidity and concentration ofsulfoxide on the extraction of Au was observed. The extractive composition was estimated to be HAuCl4·3PSO by elementary analysis and slope method. In terms of the results of infra-red spectrometry and ultraviolet absorption spectrometry the authors suggest the extraction mechanism to the acidity of water phase, under low acidity it shows oxygen-coordinated solvation; at high acidity it denotes acidic association mechanism.
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