Optimization of Sr-90 precipitation in nitric acid using design of experiments for radioactive waste characterization method
| Autor: | Christèle Colin, Eric Destrel, Emilie Baudat, Celine Gautier, Gabriel Lambrot, Pascal Fichet, Margaux Giuliani |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Chromatography
Chemistry Precipitation (chemistry) Health Toxicology and Mutagenesis Design of experiments Public Health Environmental and Occupational Health Radioactive waste 010403 inorganic & nuclear chemistry 01 natural sciences Pollution 0104 chemical sciences Analytical Chemistry chemistry.chemical_compound Activity measurements Nuclear Energy and Engineering Volume (thermodynamics) Nitric acid Radiology Nuclear Medicine and imaging Effluent Spectroscopy |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry. 328:637-650 |
| ISSN: | 1588-2780 0236-5731 |
| Popis: | 90Sr radiochemical method using nitric acid for Sr and Ca separation was optimized using design of experiments methodology. Nitric acid concentration and total volume of solution were determined as influencing factors applying Plackett–Burman design. These parameters were then optimized using Box–Behnken experimental design. An optimal nitric acid concentration of 63% and a total solution volume of 26 mL were found to achieve a Sr recovery of 93% with only 5% of Ca for a single precipitation. The developed procedure was applied on real radwaste samples: effluent, sludge and concrete. By comparison of the recovery and the 90Sr activity measurement with the results of the in-house standard method based on fuming nitric acid, the optimized method with concentrated nitric acid was validated. The fuming nitric acid can now be eliminated for 90Sr radioactive waste characterization. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|