title: Thorium in the workplace: results from a European-based measurement comparison project.
abstract: A Series of comparisons were conducted to test the capabilities of a range of metrological techniques and analytical laboratories engaged in the assay of thorium in the workplace. The results of these exercises are presented together with the decision criteria used to determine whether results are significantly different from the true value. The discussion highlights those aspects which warrant closer and further attention.
authors.affiliation: Centre for Ionising Radiation Metrology, National Physical Laboratory, Teddington, Middlesex, UK. dagmara.tyler@npl.co.uk
authors.forename: D K
authors.initials: DK
authors.lastname: Tyler
authors.forename: M J
authors.initials: MJ
authors.lastname: Woods
authors.forename: S M
authors.initials: SM
authors.lastname: Jerome
authors.forename: A V
authors.initials: AV
authors.lastname: Harms
mesh_terms: D005060:Europe; D006801:Humans; D013058:Mass Spectrometry; D009501:Neutron Activation Analysis; D016273:Occupational Exposure; D011834:Radiation Monitoring / Q000379:methods* / Q000592:standards; D011848:Radioactive Pollutants / Q000032:analysis*; D012015:Reference Standards; D013051:Spectrometry, Gamma; D013910:Thorium / Q000032:analysis*
chemical_list: D011848:Radioactive Pollutants; D013910:Thorium