在塞浦路斯的沙漠尘埃日期间,空气中的粒子放射性
Souzana Achilleos1, Connor Henderson2, Panayiotis Kouis3
1Department of Primary Care and Population Health, University of Nicosia Medical School, 21 Ilia Papakyriakou, 2414, Engomi, Nicosia, Cyprus.
Journal of environmental radioactivity
|June 9, 2024
概括
沙漠沙尘暴显著增加空气中的粒子放射性,包括总的α/β和特定的放射性核素,如-137和-40. 来自中东的尘埃显示放射性水平高于来自撒哈拉的尘埃.
科学领域:
- 环境科学 环境科学
- 放射化学 放射化学是指辐射化学.
- 大气科学 大气科学
背景情况:
- 地中海国家经常面临沙漠沙尘暴,影响环境和健康.
- 在这些事件中,空气中的粒子放射性是令人担忧的.
- 了解尘埃事件期间的放射性水平对于公共卫生风险评估至关重要.
研究的目的:
- 在塞浦路斯,比较沙漠尘埃和非尘埃天气中的空气颗粒放射性水平.
- 评估尘埃起源 (撒哈拉与中东) 对放射性水平的影响.
- 为了研究沙漠尘埃,颗粒物和放射性核酸度之间的关系.
主要方法:
- 从利马索尔和尼科西亚的城市监测站收集了总悬浮颗粒 (TSP) 样本.
- 分析了总的α/β放射性,以及特定的放射性核酸 (137Cs, 40K).
- 利用线性回归模型,根据季节性,趋势和太阳活动进行调整,以分析尘埃暴的影响.
主要成果:
- 在沙漠尘埃的日子里,总α/β和放射性核素 (137Cs,40K) 放射性水平显著更高.
- 来自中东的尘埃的放射性比撒哈拉的尘埃更高.
- 在尘埃的日子里,放射性与PM10的比率较低,这表明尘埃稀释了人为放射性的相对度.
结论:
- 在塞浦路斯,沙漠沙尘暴显然增加了空气中的粒子放射性.
- 尘埃的起源对放射性增加的幅度起着作用.
- 需要进一步的研究来区分人类和自然来源对尘埃颗粒放射性的贡献.
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