Inoue K, Hosoda M, Fukushi M, Furukawa M, Tokonami S
Department of Radiological Sciences, Tokyo Metropolitan University, 7-2-10 Higashiogu, Arakawa-ku, Tokyo 116-8551, Japan.
Hirosaki University Graduate School of Health Sciences, 66-1 Hon-cho, Hirosaki, Aomori 036-8564, Japan
Radiat Prot Dosimetry. 2015 Nov;167(1-3):231-4. doi: 10.1093/rpd/ncv251. Epub 2015 May 4.
The monitoring of absorbed dose rate in air has been carried out continually at various locations in metropolitan Tokyo after the accident of the Fukushima Daiichi Nuclear Power Plant. While the data obtained before the accident are needed to more accurately assess the effects of radionuclide contamination from the accident, detailed data for metropolitan Tokyo obtained before the accident have not been reported. A car-borne survey of the absorbed dose rate in air in metropolitan Tokyo was carried out during August to September 2003. The average absorbed dose rate in air in metropolitan Tokyo was 49±6 nGy h(-1). The absorbed dose rate in air in western Tokyo was higher compared with that in central Tokyo. Here, if the absorbed dose rate indoors in Tokyo is equivalent to that outdoors, the annual effective dose would be calculated as 0.32 mSv y(-1).
福岛第一核电站事故发生后，一直在东京都的各个地点持续监测空气中的吸收剂量率。虽然需要事故前获取的数据来更准确地评估事故中放射性核素污染的影响，但此前尚未报告东京都事故前的详细数据。2003年8月至9月期间，对东京都空气中的吸收剂量率进行了车载调查。东京都空气中的平均吸收剂量率为49±6纳戈瑞每小时。东京西部空气中的吸收剂量率高于东京中部。在此，如果东京室内的吸收剂量率与室外相当，那么年有效剂量将计算为0.32毫希沃特每年。
