2012•Chinese Journal of Health Laboratory TechnologyRequires access

Study on the extraction separation of copper,lanthanum and cerium with sulfosalicylic acid as the extractant

Liu Chang-xian

Abstract

Objective:In a Tween80-(NH4)2SO4 liquid-solid extraction system,extraction separation of Cu(Ⅱ),La(Ⅲ)and Ce(Ⅳ)metal ions with Sulfosalicylic acid as the extractant were investigated.Methods: Based on study of absorption spectrum of sulfosalicylic acid and metal ionic compounds in solid extraction system,the extraction efficiencies of Cu(Ⅱ),La(Ⅲ)and Ce(Ⅳ)metal ions were discussed under different acidities,salt dosages,quantities of extractant and types of surfactants.Results: Compared to Sulfosalicylic acid spectra,the maximum wavelength of Cu(Ⅱ)and Ce(Ⅳ)shifted to the red,while that of La(Ⅲ)did not.The extraction separation of Cu(Ⅱ)and La(Ⅲ)was carried out by controlling the solution acidity(pH2.0).Conclusion: The method is rapid,simple and easy to operate.It has been applied to the extraction separation of metal ions with satisfactory results.

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Key concepts: Sulfosalicylic acid, Chemistry, Extraction (chemistry), Lanthanum, Cerium, Copper, Metal ions in aqueous solution, Metal