High indoor radon concentrations in an Alpine region of western Tyrol.
In a village in western Tyrol, Austria (Umhausen, 2,600 inhabitants), unusually high indoor radon concentrations were measured, and the lung cancer mortality rate was found to be higher than that of the total population of Tyrol (620,000 inhabitants). Annual means of radon concentrations were found to be particularly high in the area between the two rivers Otztaler Ache and Hairlachbach, geologically an alluvial fan of a giant rock slide of granitic gneisses (area A, median of annual means on the ground floors: 1,868 Bq m-3); radon concentrations were comparatively low in the rest of the village (area B, median of annual means on the ground floors: 182 Bq m-3). On the basis of these medians, the annual exposures were calculated according to the ICRP model (area A: 58.8 x 10(5) Bq h m-3; area B: 5.7 x 10(5) Bq h m-3). Data taken from the Cancer Registry of Tyrol were used to determine the age- and sex-standardized lung cancer mortality rate (area A: 6.17; area B: 1.43).
Institute of Medical Physics, University of Innsbruck.
O
O
Ennemoser
W
W
Ambach
T
T
Auer
P
P
Brunner
P
P
Schneider
W
W
Oberaigner
F
F
Purtscheller
V
V
Stingl
D016902:Air Pollution, Indoor / Q000032:analysis*; D000398:Air Pollution, Radioactive / Q000032:analysis*; D000531:Altitude; D001317:Austria; D006798:Housing; D006801:Humans; D008175:Lung Neoplasms / Q000453:epidemiology; D009381:Neoplasms, Radiation-Induced / Q000453:epidemiology; D011886:Radon / Q000032:analysis*; D017687:Radon Daughters; D012307:Risk Factors
D017687:Radon Daughters; D011886:Radon