Estimation of 90Sr in reprocessing streams using pre-packed extraction chromatographic column of 4,4'(5')-bis(tert-butylcyclohexano)-18-crown-6 impregnated on amberlite XAD-7
| Autor: | B. S. Tomar, C. S. Dileep, P.M. Gandhi, Poonam Jagasia, S. C. Tripathi, Swapan Das, P.S. Dhami |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Chromatography
Elution Precipitation (chemistry) Health Toxicology and Mutagenesis 18-Crown-6 Extraction (chemistry) Public Health Environmental and Occupational Health chemistry.chemical_element Thorium Amberlite Uranium PUREX Pollution Analytical Chemistry chemistry.chemical_compound Nuclear Energy and Engineering chemistry Radiology Nuclear Medicine and imaging Spectroscopy |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry. 298:105-110 |
| ISSN: | 1588-2780 0236-5731 |
| Popis: | This paper describes a method for the estimation of 90Sr in various PUREX and THOREX process streams. Radiostrontium present in the sample is loaded on an extraction chromatographic column containing 4,4’(5’)-bis(tert-butylcyclohexano)-18-crown-6 (DtBuCH18C6) in 1-octanol impregnated on amberlite XAD-7 after diluting it appropriately in about 3.0 M HNO3. The column is then washed using 3 M HNO3 to remove the impurities completely and finally 90Sr is eluted in 5 mL of water and subjected to beta counting without time delay. Recovery of 90Sr separation is studied in presence of varying quantity of uranium and thorium in the sample. The method is used to estimate 90Sr in actual process samples containing 90Sr activity in wide range of activity varying from Bq/mL to Ci/L. The results are compared with those obtained by conventional radiochemical precipitation method and found to agree within ±5 %. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|