Preconcentration of strontium using aphrons |
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Authors: | P. Rajec Th. Ngo Manh |
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Affiliation: | (1) Department of Nuclear Chemistry, Faculty of Science, Comenius University, Mlynska Dolina CH-1, 842 15 Bratislava, (Slovakia) |
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Abstract: | Aphrons containing di-(2-ethylhexyl)phosphoric acid (DEHPA) as an active substance were used for preconcentration of strontium from acetate buffers. Conditions for preparation of reasonably stable aphrons using non-ionic and anionic detergents in n-alkane and water mixture were found. After distribution of strontium, aphrons were separated from water solution by filtration with micro-filters. The separation efficiency was compared to the results obtained in liquid-liquid extraction of strontium with DEHPA in n-alkane. The results show that the preconcentration efficiency for strontium for aphrons is as good as for liquid-liquid extraction systems. |
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