title: INTERNAL DOSES OF THREE PERSONS STAYING 110 KM SOUTH OF THE FUKUSHIMA DAIICHI NUCLEAR POWER STATION DURING THE ARRIVAL OF RADIOACTIVE PLUMES BASED ON DIRECT MEASUREMENTS.
abstract: The authors describe the results of direct measurements made on three persons who stayed in Tokai-mura, a village located ∼110 km south of the Fukushima Daiichi Nuclear Power Station (FDNPS), during the arrival of significant radioactive plumes released from the FDNPS as a consequence of the Tohoku earthquake/tsunami/FDNPS accident in March 2011. These measurements were made using a NaI(Tl) spectrometer and a whole-body counter shortly after the accident. Their thyroid equivalent doses ((131)I) were estimated to be 0.9-1.4 mSv under the assumption of acute intake via inhalation on 15 March, when the first significant release event was observed. Although greatly depending on the physicochemical form of iodine, the intake amount ratios of (131)I to (137)Cs for the three subjects were calculated as 2.7-3.7, which were much smaller than the radioactivity ratio (7.8) found in air sampling at the same site.
authors: Japan Atomic Energy Agency, 4-33 Muramatsu, Tokai-mura, Naka-gun, Ibaraki, Japan Present address: National Institute of Radiological Sciences, Chiba-city, Chiba, Japan. osakuri@nirs.go.jp.
authors: Osamu
authors: O
authors: Kurihara
authors: Japan Atomic Energy Agency, 4-33 Muramatsu, Tokai-mura, Naka-gun, Ibaraki, Japan.
authors: Takahiro
authors: T
authors: Nakagawa
authors: Japan Atomic Energy Agency, 4-33 Muramatsu, Tokai-mura, Naka-gun, Ibaraki, Japan.
authors: Chie
authors: C
authors: Takada
authors: National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba, Japan.
authors: Kotaro
authors: K
authors: Tani
authors: National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba, Japan.
authors: Eunjoo
authors: E
authors: Kim
authors: Japan Atomic Energy Agency, 4-33 Muramatsu, Tokai-mura, Naka-gun, Ibaraki, Japan.
authors: Takumaro
authors: T
authors: Momose
mesh_terms: D000396:Air Pollutants, Radioactive / Q000032:analysis*; D002138:Calibration; D002588:Cesium Radioisotopes / Q000032:analysis*; D055866:Earthquakes; D004781:Environmental Exposure / Q000032:analysis*; D062406:Fukushima Nuclear Accident; D006801:Humans; D007457:Iodine Radioisotopes / Q000032:analysis*; D008297:Male; D055848:Nuclear Power Plants; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000379:methods*; D011851:Radioactivity; D013961:Thyroid Gland / Q000528:radiation effects; D013997:Time Factors; D057192:Tsunamis; D014915:Whole-Body Counting
chemical_list: D000396:Air Pollutants, Radioactive; D002588:Cesium Radioisotopes; D007457:Iodine Radioisotopes