Determination of 226Ra in urine samples by alpha spectrometry
| Autor: | G. Drikos, Constantinos Potiriadis, K. Kehagia, V. Koukouliou, S. Bratakos |
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| Rok vydání: | 2007 |
| Předmět: |
Radionuclide
Radiation Aqueous solution Radiological and Ultrasound Technology business.industry Spectrum Analysis Radiochemistry Public Health Environmental and Occupational Health chemistry.chemical_element General Medicine Human decontamination Contamination Chemical Fractionation Urinalysis Alpha Particles Radiation Dosage Radium chemistry TRACER Yield (chemistry) Radiology Nuclear Medicine and imaging Radiation protection business Radiometry |
| Zdroj: | Radiation protection dosimetry. 127(1-4) |
| ISSN: | 0144-8420 |
| Popis: | A radiation protection system to assess the internal contamination of workers during decontamination activities in an abounded fertilizer industry in the region of Attika, Greece, has been implemented. This system concerns, among other radionuclides, 226 Ra. Because of the low 226 Ra activities in urine, alpha spectrometry was used as the determination method after radiochemical separation. Radium was co precipitated with lead sulphate and purified using anion and cation exchange techniques. The source for the alpha spectrometric measurement was prepared by the electrodeposition of radium, from an aqueous/ethanol solution, onto stainless steel. The tracer used was 229 Th. The chemical yield and the activity concentration were calculated via its daughter radionuclide 217 At. Using the time-evolution formulas to calculate the 217 At growth from its parent radionuclide 225 Ra, a computer software was developed. This software was incorporated in a database, which automatically calculates and stores the results. |
| Databáze: | OpenAIRE |
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