title: The 40K activity of one gram of potassium.
abstract: The activity of 40K in natural potassium as derived from the recent literature varies between 27.33 to 31.31 Bq g-1 of potassium. This paper reports measurements by gamma-ray spectrometry and compares these with independent calculations, yielding values of 30.18 +/- 0.72 Bq g-1 and 31.00 +/- 0.33 Bq g-1 respectively.
authors.affiliation: Department of Medical Physics, University Hospital Birmingham NHS Trust, Queen Elizabeth Hospital, UK.
authors.forename: S B
authors.initials: SB
authors.lastname: Samat
authors.forename: S
authors.initials: S
authors.lastname: Green
authors.forename: A H
authors.initials: AH
authors.lastname: Beddoe
mesh_terms: D005720:Gamma Rays; D006801:Humans; D008956:Models, Chemical; D011188:Potassium / Q000032:analysis / Q000737:chemistry*; D011197:Potassium Radioisotopes / Q000032:analysis*; D015203:Reproducibility of Results; D013051:Spectrometry, Gamma / Q000379:methods
chemical_list: D011197:Potassium Radioisotopes; D011188:Potassium