title: The new IAEA reference material: IAEA-434 technologically enhanced naturally occurring radioactive materials (TENORM) in phosphogypsum.
abstract: A reliable determination of Technologically Enhanced Naturally Occurring Radioactive Materials in phosphogypsum is necessary to comply with radiation protection and environmental regulations. In this respect, a new phosphogypsum reference material was produced and certified to assist in the validation of analytical methods and the quality assurance of produced analytical results. This paper presents the sample preparation methodology, material homogeneity assessment, characterization campaign results and assignment of property values, and associated uncertainties. The reference values and associated uncertainties for Pb-210, Ra-226, Th-230, U-234 and U-238 were established based on consensus values calculated from analytical results reported by three National Metrology Institutes and five expert laboratories.
authors.affiliation: International Atomic Energy Agency, Agency's Laboratories, Vienna International Center, PO Box 100, A-1400 Vienna, Austria. A.Shakhashiro@iaea.org
authors.forename: A
authors.initials: A
authors.lastname: Shakhashiro
authors.forename: U
authors.initials: U
authors.lastname: Sansone
authors.forename: H
authors.initials: H
authors.lastname: Wershofen
authors.forename: A
authors.initials: A
authors.lastname: Bollhöfer
authors.forename: C K
authors.initials: CK
authors.lastname: Kim
authors.forename: C S
authors.initials: CS
authors.lastname: Kim
authors.forename: G
authors.initials: G
authors.lastname: Kis-Benedek
authors.forename: M
authors.initials: M
authors.lastname: Korun
authors.forename: M
authors.initials: M
authors.lastname: Moune
authors.forename: S H
authors.initials: SH
authors.lastname: Lee
authors.forename: S
authors.initials: S
authors.lastname: Tarjan
authors.forename: M S
authors.initials: MS
authors.lastname: Al-Masri