title: Participation in IAEA-TEL-201304/28 ALMERA Proficiency Test Exercise on Determination of Anthropogenic Radionuclides in Water and Flour Samples.
abstract: The Office of Atoms for Peace (OAP) participated in the IAEA-TEL-201304/28 ALMERA Proficiency Test Exercise, "Determination of Anthropogenic Radionuclides in Water and Flour Samples," organized by the ALMERA network. There were three test samples sent together with one known activity sample for quality control purpose. Two of the test samples were spiked water: one contained (134)Cs and (137)Cs and the other contained (90)Sr, (60)Co, (152)Eu and (241)Am. The third sample was wheat flour spiked with (134)Cs and (137)Cs. OAP submitted all results to IAEA after determining (134)Cs, (137)Cs, (60)Co, (152)Eu and (241)Am activities by direct gamma-ray counting and (90)Sr by chemical separation and Cerenkov measurement. Our results with critical comments and statistical analysis are described in this paper.
authors.affiliation: Radiation Monitoring Group, Bureau of Technical Support for Safety Regulation, Office of Atoms for Peace, Thailand. Electronic address: suputtra@oaep.go.th.
authors.forename: S
authors.initials: S
authors.lastname: Visetpotjanakit
authors.affiliation: Radiation Monitoring Group, Bureau of Technical Support for Safety Regulation, Office of Atoms for Peace, Thailand.
authors.forename: S
authors.initials: S
authors.lastname: Kaewpaluek
authors.affiliation: Radiation Monitoring Group, Bureau of Technical Support for Safety Regulation, Office of Atoms for Peace, Thailand.
authors.forename: S
authors.initials: S
authors.lastname: Udomsomporn
keywords: ALMERA; Anthropogenic radionuclides; Proficiency test; Radioactivity in environmental samples