title: Screening of alpha- and beta-emitting radionuclides using liquid scintillation counting and monitoring procedures in radiation emergencies.
abstract: Urine gross alpha and beta activity analysis was conducted, and an internal contamination screening method was adopted to monitor visitors to Japan after the Fukushima accident. In particular, spot urine samples were used to evaluate internal contamination for 16 mo, and a total of 90 people participated in gross alpha and beta emitter screening. An ultra-low-background liquid scintillation counter was used for measurement, and optimal pulse shape analysis values were determined by measuring alpha- and beta-emitting certified reference materials. Moreover, linearity and reproducibility were assessed to validate the adopted methods, and international intercomparison was conducted using synthetic urine samples by measuring alpha- and beta-emitting radionuclides in multi-contaminated samples. Here, the measurement results of visitors to Japan are discussed, and a screening procedure is established for gross alpha and beta activity analysis during radiation emergencies.
authors.affiliation: *National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul, Korea.
authors.forename: Seokwon
authors.initials: S
authors.lastname: Yoon
authors.forename: Wi-Ho
authors.initials: WH
authors.lastname: Ha
authors.forename: Jaeryong
authors.initials: J
authors.lastname: Yoo
authors.forename: Seung-Sook
authors.initials: SS
authors.lastname: Lee
mesh_terms: D000512:Alpha Particles; D001610:Beta Particles; D004032:Diet; D005260:Female; D062406:Fukushima Nuclear Accident; D006801:Humans; D007564:Japan; D008297:Male; D011197:Potassium Radioisotopes / Q000737:chemistry; D011834:Radiation Monitoring / Q000379:methods*; D011868:Radioisotopes / Q000032:analysis*; D012016:Reference Values; D015203:Reproducibility of Results; D012588:Scintillation Counting / Q000379:methods*
chemical_list: D011197:Potassium Radioisotopes; D011868:Radioisotopes