title: Lung dose estimates from 222Rn in Arizona groundwater based on liquid scintillation measurements.
abstract: Since August 1989, 222Rn groundwater samples from across the state of Arizona have been collected and analyzed using liquid scintillation. Of the 253 specimens acquired, 65% have 222Rn concentrations above 11 Bq L-1 (300 pCi L-1), while 16% have 222Rn activities over 37 Bq L-1 (1,000 pCi L-1). The geometric mean 222Rn concentration for all the wells tested is 13 Bq L-1 x divided by 4; the arithmetic mean is 37 +/- 122 Bq L-1. Using the geometric mean, it is estimated that an additional tracheobronchial lung dose equivalent of 0.19 mSv y-1 x divided by 13.9 is delivered to Arizona residents from the well water to home pathway.
authors.affiliation: Radiation Measurements Facility, Arizona State University, Tempe 85287-5706, USA.
authors.forename: J M
authors.initials: JM
authors.lastname: Barnett
authors.forename: K E
authors.initials: KE
authors.lastname: Holbert
authors.forename: B D
authors.initials: BD
authors.lastname: Stewart
authors.forename: W K
authors.initials: WK
authors.lastname: Hood
mesh_terms: D001130:Arizona; D055592:Biophysical Phenomena; D001703:Biophysics; D006801:Humans; D008168:Lung / Q000528:radiation effects*; D008954:Models, Biological; D011829:Radiation Dosage; D011886:Radon / Q000009:adverse effects* / Q000032:analysis; D012588:Scintillation Counting / Q000379:methods; D013679:Technology, Radiologic; D014875:Water Pollutants, Radioactive / Q000009:adverse effects* / Q000032:analysis; D014881:Water Supply
chemical_list: D014875:Water Pollutants, Radioactive; D011886:Radon