1College of Chemistry, Jilin Normal University, Siping, Jilin 136000, P.R. CHINA
2Department of Bioengineering, Jilin Business and Technology College, Xi An Road No. 4728, Changchun, Jilin 130062, P.R. CHINA
3Institute of Applied Ecology Chinese AAcademy of Science, Shenyang 110016, P.R. CHINA
4Environmental Science, Henan Normal University, Xinxiang, Henan 453007, P.R. CHINA
The distribution of gallium(b) and indium (b) between hydrochloric or sulphuric acid solution with sec-nonylphenoxy acetic acid(CA-100) in kerosene has been investigated under various conditions. CA-100 is a new organocarboxylic extractant, which has been shown to be efficient for gallium(b) and indium(b) whereas germanium(c), which was not extracted. The extraction system is studied as a function of initial pH, equilibration time, CA-100 concentration and aqueous ionic media(Cl- and SO42-). Extraction mechanism is discussed on the basis of slope-analysis method, constant molecular series method and saturation capacity method. It was found that sec-nonylphenoxy acetic acid was extracted into the organic phase by formation of the MA3HA species from chloride media and in the form of MA3 from sulphate media.(M=Ga and In) The equilibrium equations are proposed on the basis of the results that obtained.
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