来自印度拉贾斯坦邦的土壤样本的环境放射性和放射性危害评估
Mahesh Tiwari1,2, Amar Dutt Pant1, Tejas Rathod1
1Environmental Monitoring and Assessment Division, Bhabha Atomic Research Centre, Mumbai, 400085, India.
Environmental geochemistry and health
|March 6, 2026
概括
评估了拉贾斯坦邦土壤中的自然放射性,包括-226,-232和-40. 所有测量的放射性风险参数都在安全范围内,表明没有显著的暴露风险.
科学领域:
- 环境科学 环境科学
- 放射学科学 放射学科学
- 地质化学 地质化学
背景情况:
- 土壤中的自然放射性是环境辐射暴露的重要因素.
- 了解放射性水平对于评估潜在的健康风险至关重要.
研究的目的:
- 综合评估拉贾斯坦邦土壤中的自然放射性和放射性风险参数.
- 为了确定关键放射性核酸的活性度 (226Ra,232Th,40K).
主要方法:
- 从印度拉贾斯坦邦的各个地点收集了119个土壤样本.
- 使用高纯度日耳曼 (HPGe) 射线光谱仪进行放射性核酸分析.
- 计算的放射性危害指数 (例如,等效活性,危害指数,年有效剂量).
主要成果:
- 活动度为226Ra (15.248.9 Bq kg-1),232Th (21.389.2 Bq kg-1) 和40K (321.8955.9 Bq kg-1) 的范围.
- 平均活动度为226Ra的27.1±1.8 Bq kg−1,232Th的47.2±1.7 Bq kg−1和40K的517.3±18.1 Bq kg−1.
- 所有计算的放射性危害指数均在联合国安理会所设定的安全限值内.
结论:
- 拉贾斯坦邦土壤中的自然放射性水平与全球平均水平相美.
- 土壤样本对人口没有显著的辐射暴露风险.
- 这项研究为该地区未来的环境监测和放射性风险评估提供了必要的基线数据.
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