title: Thoron exhalation rates in areas of Japan.
abstract: Thoron exhalation rates were measured with a newly made portable instrument at 33 areas in 7 prefectures of Japan. Thoron exhalation rates ranged from 49 to 4890 mBq m(-2) s(-1). Radon exhalation rates were also measured in many of the areas at the same time and ranged from 2.1 to 11 mBq m(-2) s(-1). Thoron exhalation rates showed a rough correlation with radon exhalation rates. Both exhalation rates also showed a rough correlation with geological features.
authors.affiliation: School of Health Sciences, Fujita Health University, Toyoake, Aichi Prefecture, Japan. shmmchkn@sf.commufa.jp
authors.forename: M
authors.initials: M
authors.lastname: Shimo
authors.forename: Y
authors.initials: Y
authors.lastname: Ishimori
authors.forename: M
authors.initials: M
authors.lastname: Hosoda
authors.forename: S
authors.initials: S
authors.lastname: Tokonami
mesh_terms: D000392:Air Movements; D000396:Air Pollutants, Radioactive; D016902:Air Pollution, Indoor / Q000032:analysis*; D004781:Environmental Exposure; D004867:Equipment Design; D005740:Gases; D005843:Geography; D007564:Japan; D011834:Radiation Monitoring / Q000295:instrumentation*; D011874:Radiometry; D011886:Radon / Q000032:analysis*; D017687:Radon Daughters / Q000032:analysis*; D012306:Risk; D012588:Scintillation Counting / Q000295:instrumentation / Q000379:methods; D013997:Time Factors
chemical_list: D000396:Air Pollutants, Radioactive; D005740:Gases; D017687:Radon Daughters; D011886:Radon