在室内清洁期间佩戴的口罩上发现含有放射性的微粒
Shogo Higaki1, Hiroko Yoshida-Ohuchi2, Naohide Shinohara3
1Isotope Science Center, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo, 113-0032, Japan. shogo@ric.u-tokyo.ac.jp.
Scientific reports
|June 20, 2023
概括
在福岛第一核电站附近的室内空气中检测到放射性微粒 (CsMP). 建议在清洗期间佩戴口罩,以防止吸入这些放射性颗粒.
科学领域:
- 环境科学 环境科学
- 辐射健康 辐射健康
- 核安全问题 核安全问题
背景情况:
- 在福岛第一核电站 (FDNPP) 事故发生十年后,放射性颗粒仍然存在于室内环境中.
- 最近在住宅室内空气中检测到放射性颗粒需要进一步调查.
研究的目的:
- 为了确定室内空气中含有放射性的微粒 (CsMP) 的存在和特征.
- 用于测量在室内清洁活动中使用的面罩上附着的放射性放射性.
- 评估CsMPs对室内空气污染的贡献.
主要方法:
- 在FDNPP附近的59个住宅中,个人在室内清洁期间佩戴非织造面罩.
- 面具被分析为存在放射性 (Cs) 放射性和CsMPs.
- 量化了放射性水平和粒子特征.
主要成果:
- 在分析的284件口罩中,268件被检测到显著的137Cs放射性.
- 在28种口罩上发现了44种新的CsMP.
- 结果表明,高度度的可溶性放射性颗粒或气溶粘附在室内灰尘上,对1.0-2.5微米颗粒大小范围内的放射性有显著的贡献.
结论:
- CsMPs是FDNPP附近室内空气污染的重要组成部分.
- 在室内清洁期间佩戴口罩是建议的防护措施,防止吸入放射性颗粒.
- 持续的监测和缓解策略对于长期的公共卫生保护至关重要.
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