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  • 1 Instituto de Pesquisas Energéticas e Nucleares Comissão Nacional de Energia Nuclear/SP Pinheiros P.O. Box 11049 CEP 05499 São Paulo Brazil
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Thallium-201 was obtained by irradiating natural mercury with protons from IPEN's CV-28 Cyclotron. The chemical separation process chosen to separate thallium from mercury was an extraction chromatography technique. It consists on the passage of aqueous solutions (mobile phase), containing the elements that will be separated, through a glass column packed with an inert powder (support) saturated with the extractant (stationary phase).