title: Intercomparison of Rn-222 determination from groundwater.
abstract: An intercomparison exercise on Rn-222 determination in groundwater was organized between eight Nordic laboratories. The individual laboratory results were in most cases within 20% of the median value and within reported uncertainties. Considering the particular difficulties in preparing, transporting and analyzing Rn-222, being a gaseous radionuclide, the results indicate a high analytical capability among the Nordic laboratories. In order to maintain a high analytical quality, similar intercomparisons will also be needed in the future.
authors.affiliation: Radiation and Nuclear Safety Authority (STUK), Laippatie 4, 00880 Helsinki, Finland. pia.vesterbacka@stuk.fi
authors.forename: P
authors.initials: P
authors.lastname: Vesterbacka
authors.forename: H
authors.initials: H
authors.lastname: Pettersson
authors.forename: U-M
authors.initials: UM
authors.lastname: Hanste
authors.forename: E
authors.initials: E
authors.lastname: Jakobson
authors.forename: T
authors.initials: T
authors.lastname: Kolstad
authors.forename: P
authors.initials: P
authors.lastname: Roos
authors.forename: I
authors.initials: I
authors.lastname: Ostergren
mesh_terms: D004784:Environmental Monitoring; D004957:Estonia; D005387:Finland; D019015:Geologic Sediments / Q000032:analysis; D011786:Quality Control; D011834:Radiation Monitoring / Q000379:methods*; D011886:Radon / Q000032:analysis*; D015203:Reproducibility of Results; D012537:Scandinavian and Nordic Countries; D012990:Soil Pollutants, Radioactive / Q000032:analysis; D014875:Water Pollutants, Radioactive / Q000032:analysis*
chemical_list: D012990:Soil Pollutants, Radioactive; D014875:Water Pollutants, Radioactive; D011886:Radon