Abstract:
: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 'Dolní Rozínka' at Rozná, 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.
journal_name
Radiat Prot Dosimetryjournal_title
Radiation protection dosimetryauthors
Becková V,Malátová Idoi
10.1093/rpd/ncm455subject
Has Abstractpub_date
2008-01-01 00:00:00pages
469-72issue
4eissn
0144-8420issn
1742-3406pii
ncm455journal_volume
129pub_type
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