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Dissolution behaviour of 238U, 234U and 230Th deposited on filters from personal dosemeters
V Beckova, I Malatova
Language English Country Great Britain
NLK
Medline Complete (EBSCOhost)
from 1996-01-01 to 1 year ago
- MeSH
- Filtration MeSH
- Financing, Organized MeSH
- Mining MeSH
- Humans MeSH
- Radiation Monitoring instrumentation MeSH
- Radiation Protection standards instrumentation MeSH
- Radioactive Pollutants analysis MeSH
- Thorium analysis MeSH
- Uranium analysis MeSH
- Check Tag
- Humans MeSH
Kinetics of dissolution of (238)U, (234)U and (230)Th dust deposited on filters from personal alpha dosemeters was studied by means of a 26-d in vitro dissolution test with a serum ultrafiltrate simulant. Dosemeters had been used by miners at the uranium mine 'Dolni Rozinka' at Rozna, Czech Republic. The sampling flow-rate as declared by the producer is 4 l h(-1) and the sampling period is typically 1 month. Studied filters contained 125 +/- 6 mBq (238)U in equilibrium with (234)U and (230)Th; no (232)Th series nuclides were found. Half-time of rapid dissolution of 1.4 d for (238)U and (234)U and slow dissolution half-times of 173 and 116 d were found for (238)U and (234)U, respectively. No detectable dissolution of (230)Th was found.
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- $a National Radiation Protection Institute, Bartoskova 28, Prague 4, Czech Republic. vera.beckova@suro.cz
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- $a Kinetics of dissolution of (238)U, (234)U and (230)Th dust deposited on filters from personal alpha dosemeters was studied by means of a 26-d in vitro dissolution test with a serum ultrafiltrate simulant. Dosemeters had been used by miners at the uranium mine 'Dolni Rozinka' at Rozna, Czech Republic. The sampling flow-rate as declared by the producer is 4 l h(-1) and the sampling period is typically 1 month. Studied filters contained 125 +/- 6 mBq (238)U in equilibrium with (234)U and (230)Th; no (232)Th series nuclides were found. Half-time of rapid dissolution of 1.4 d for (238)U and (234)U and slow dissolution half-times of 173 and 116 d were found for (238)U and (234)U, respectively. No detectable dissolution of (230)Th was found.
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- $t Radiation Protection Dosimetry $w MED00004029 $g Roč. 129, č. 4 (2008), s. 469-472 $x 0144-8420
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