A search profile for dwellings with elevated radon levels

Publication: Research - peer-reviewConference article – Annual report year: 1996

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A search profile for dwellings with elevated radon levels has been employed to investigate possibly radon-prone areas in Denmark and to find houses suitable for radon mitigation studies. The profile is defined as dwellings which are single-family houses with slab-on-grade foundation or partly basement/slab-on-grade foundation built on either fractured granitic basement rocks, or fractured limestone. Clayey till areas were also included in the profile in order to confirm earlier findings. Three areas representing these surface geologies were selected for indoor radon measurements with CR-39 track detectors, and a total of 200 houses matching the profile underwent radon measurements during the winter 1994-95. The distribution of the measured radon concentrations were found in most cases to comply with log-normal distributions. Measurements in the living rooms of houses in each of the three selected areas yielded the following geometric means: clayey till; 107 Bq m(-3), basement rocks; 135 Bq m(-3), and limestone; 123 Bq m(-3). These values are all significantly higher than the national geometric mean of 67 Bq m(-3) for living rooms in single-family houses during winter. Copyright (C) 1996 Elsevier Science Ltd.
Original languageEnglish
JournalEnvironment International
Publication date1996
Volume22
IssueSupplement 1
PagesS783-S788
ISSN0160-4120
StatePublished

Conference

Conference6th International Symposium on the Natural Radiation Environment
Number6
CountryCanada
CityMontreal
Period05/06/9509/06/95
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