title: Studies of high indoor radon areas in Finland.
abstract: Solid state nuclear track detectors were used in a regional survey of radon in indoor air. The study area comprises seven rural municipalities and two towns in an area of 80 X 50 km2 with a population of about 65,000. Measurements were made in 754 houses in 31 subareas. The highest and lowest subarea means were 1,200 Bq/m3 and 95 Bq/m3, respectively. The estimated mean for the whole area was 370 Bq/m3. The concentrations 2,000 Bq/m3 and 800 Bq/m3 were exceeded in 32 and 90 houses, respectively. The present lung cancer incidence does not differ significantly from the national mean.
mesh_terms: D004781:Environmental Exposure; D005260:Female; D005387:Finland; D005843:Geography; D006798:Housing; D006801:Humans; D008175:Lung Neoplasms / Q000453:epidemiology / Q000209:etiology*; D008297:Male; D008834:Microclimate; D009381:Neoplasms, Radiation-Induced / Q000453:epidemiology; D011829:Radiation Dosage; D011834:Radiation Monitoring; D011886:Radon / Q000032:analysis*
chemical_list: D011886:Radon