Indoor concentration of radon, thoron and their progeny around granite regions in the state of Karnataka, India.
Radiat Prot Dosimetry
; 158(4): 406-11, 2014 Mar.
Article
en En
| MEDLINE
| ID: mdl-24106330
An extensive studies on the indoor activity concentrations of thoron, radon and their progeny in the granite region in the state of Karnataka, India, has been carried out since, 2007 in the scope of a lung cancer epidemiological study using solid-state nuclear track detector-based double-chamber dosemeters (LR-115, type II plastic track detector). Seventy-four dwellings of different types were selected for the measurement. The dosemeters containing SSNTD detectors were fixed 2 m above the floor. After an exposure time of 3 months (90 d), films were etched to reveal tracks. From the track density, the concentrations of radon and thoron were evaluated. The value of the indoor concentration of thoron and radon in the study area varies from 16 to 170 Bq m(-3) and 18 to 300 Bq m(-3) with medians of 66 and 82.3 Bq m(-3), respectively, and that of their progeny varies from 1.8 to 24 mWL with a median of 3.6 mWL and 1.6 to 19.6 mWL, respectively. The concentrations of indoor thoron, radon and their progeny and their equivalent effective doses are discussed.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Radiometría
/
Monitoreo de Radiación
/
Radón
/
Hijas del Radón
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Contaminantes Radiactivos del Aire
Límite:
Humans
País/Región como asunto:
Asia
Idioma:
En
Revista:
Radiat Prot Dosimetry
Año:
2014
Tipo del documento:
Article
País de afiliación:
India
Pais de publicación:
Reino Unido