Separation of cerium and europium by extraction with tributyl phosphate and di(2-ethylhexyl)phosphoric acid in n-alkane from nitrate solutions
| Autor: | J. Kovalancik, R. Kopunec |
|---|---|
| Rok vydání: | 1989 |
| Předmět: |
Alkane
chemistry.chemical_classification Health Toxicology and Mutagenesis Inorganic chemistry Extraction (chemistry) Public Health Environmental and Occupational Health Aqueous two-phase system chemistry.chemical_element Di-(2-ethylhexyl)phosphoric acid Pollution Analytical Chemistry chemistry.chemical_compound Cerium Nuclear Energy and Engineering chemistry Nitrate Radiology Nuclear Medicine and imaging Tributyl phosphate Europium Spectroscopy Nuclear chemistry |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry Articles. 129:295-303 |
| ISSN: | 1588-2780 0236-5731 |
| DOI: | 10.1007/bf02039827 |
| Popis: | The following extraction systems have been studied: (Ce3++Eu3+) (NO3)-(EDTA, DCTA, DTPA)/TBP in n-alkane and (Ce3++Eu3+)(NO3)/DEHPA in n-alkane at concentration ratios as follows: [Ce3+]=trace −1 mol·dm−3, [Eu3+]=trace −0.1 mol·dm−3. [TBP]=(0.183−1.83) mol·dm−3, [DEHPA]=(5·10−3−0.1) mol·dm−3, [(H, Na)NO3]=(0.1−6) mol·dm−3, [Eu3+]: [EDTA, DCTA, DTPA]=1∶1−1∶10. The initial concentration of Eu3+ in aqueous phase in the extraction system containing a mixture of Ce3+ and Eu3+ was trace, 1% and 10% compared with the Ce3+ concentration. The distribution of the elements between the phases was observed radiometrically using141Ce,152Eu and154Eu. The results are documented by the distribution ratios DCe, DEu and separation factor α=DEu/DCe as functions of variable parameters of the systems. |
| Databáze: | OpenAIRE |
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