A novel extractant-impregnated resin containing carminic acid for selective separation and pre-concentration of uranium(VI) and thorium(IV)
| Autor: | Akram Taherian, Ahmad Hosseini-Bandegharaei, Esmat Hosseini, Yousef Jalalabadi, Mehdi Nedaie, Mohammad Saeid Hosseini, Masoud Sarwghadi |
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| Rok vydání: | 2013 |
| Předmět: |
Carminic acid
Elution Health Toxicology and Mutagenesis Metal ions in aqueous solution Inorganic chemistry Public Health Environmental and Occupational Health Soil Science Thorium chemistry.chemical_element Amberlite Uranium Pollution Analytical Chemistry chemistry.chemical_compound Adsorption chemistry Environmental Chemistry Waste Management and Disposal Water Science and Technology BET theory Nuclear chemistry |
| Zdroj: | International Journal of Environmental Analytical Chemistry. 93:108-124 |
| ISSN: | 1029-0397 0306-7319 |
| DOI: | 10.1080/03067319.2011.620706 |
| Popis: | The present work proposes the use of a novel extractant-impregnated resin (EIR) as an adsorbent in trace separation and pre-concentration of U(VI) and Th(IV) ions. The new EIR was prepared by impregnating carminic acid onto Amberlite XAD-16 resin beads. The morphology of new EIR was studied by BET surface area measurements and SEM micrographs. A column packed with CA/XAD-16 was used for selective separation and pre-concentration of the metal ions. Maximum adsorption of Th(IV) and U(VI) ions occurred at pHs of 3.50–5.75 and 3.75–6.50, respectively. The adsorbed metals could be eluted sequentially using 0.55 mol L−1 HCl for U(VI) and 2.25 mol L−1 HCl for Th(IV). The dynamic capacity of EIR was found to be 0.832 and 0.814 mmol g−1 for Th(IV) and U(VI), respectively. The tolerance limit of some foreign ions was also studied. The proposed method showed a good performance in analyzing geological reference materials and a synthetic seawater sample. Furthermore, the above procedure was successfully employed for t... |
| Databáze: | OpenAIRE |
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