Geng Xin-hu
2015
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Journal
Journal of Guangzhou University
Abstract
The extraction behavior of thallium by NH4SCN-ethyl violet-Ethanol system was studied and proper conditions were selected. The results show that Tl( Ⅲ) can be completely separated from Al( Ⅲ),Ni( Ⅱ),Mg( Ⅱ),Mn( Ⅱ),Cu( Ⅱ),Pb( Ⅱ),Fe( Ⅲ),Zn( Ⅱ) by adding 3. 5 g( NH4)2SO4to 10 m L 30%( V /V) ethanol solution. Synthetic water samples were tested for separation and determination of thallium,and the results were satisfactory. The method has been applied to the preconcentration and determination of trace Tl( Ⅲ) in water samples and the result of determination is satisfactory.