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Citation: SONG Lian-Qing, BAI Hai-Xin, LI Quan-Min. Separation of Lead by Ammonium Sulfate-Potassium Iodide-Ethyl Violet Floatation System[J]. Chinese Journal of Applied Chemistry, ;2003, 20(3): 258-261. shu

Separation of Lead by Ammonium Sulfate-Potassium Iodide-Ethyl Violet Floatation System

1.
a College of Chemistry and Environmental Science, Henan Normal University, Key Laboratory of Environmental Science and Engineering, Commission of Henan Province, Xinxiang 453002;
2.
b Department of Chemistry, Henan Education College, Zhengzhou

Corresponding author: LI Quan-Min,
Received Date: 16 July 2002
Available Online: 17 December 2002
Fund Project: 河南省创新人才工程基金资助项目(教高[2001]513) (教高[2001]513)

The Pb(Ⅱ) ions have been separated by a flotation system consisted of ammonium sulfate, potassium iodide and ethyl vielot(EV). The results show that ternary ion-association precipitates (PbI₃^-)·(EV⁺) and (PbI₄^2-)·(EV⁺)₂ are formed. In the presence of 0.1 g/mL (NH₄)₂SO₄, the precipitates floated on the surface of water phase can be easily separated by water. Thus Pb(Ⅱ) can be completely separated from Zn(Ⅱ), Mn(Ⅱ), Fe(Ⅲ), Co(Ⅱ), Al(Ⅲ) and Ni(Ⅱ) in aqueous solution of pH=1.0~4.0.
- lead(Ⅱ),
- potassium iodide,
- ethyl violet,
- floatation
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