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综述了不同国家在大米中摄入226Ra,232Th和40K的年有效剂量

Dedawan Salam Saleh¹, Hemn Salh^1,2, Jahfer Majeed Smail¹

¹Department of Physics, Faculty of Science and Health, Koya University, Koya, KOY45, Iraq.

Isotopes in environmental and health studies

|April 11, 2025

概括

这次审查分析了全球大米中的放射性元素 (-226,-232,-40). 虽然大多数大米的含量都是安全的,但有些地区的剂量更高,需要对食品安全进行监测.

科学领域:

环境科学环境科学
辐射保护辐射保护
食品安全食品安全

背景情况:

米是世界上一半以上的人口的主要食物,因此其放射性核酸含量对人类健康至关重要.
评估大米中的放射性对食品安全和人类健康风险评估至关重要.
自然存在的放射性核酸如-226 (226Ra),-232 (232Th) 和-40 (40K) 可以在粮食作物中积累.

研究的目的:

综合全球关于大米中226Ra,232Th和40K度的研究.
通过大米消费来评估摄入这些放射性核素的年度有效剂量.
为了确定可能因大米产生的辐射暴露率较高的地区.

主要方法:

一个全面的文献综述,评估大米中的226Ra,232Th和40K的研究.
使用酸闪 (NaI (Tl)) 和高纯度 (HPGe) 探测器进行测量.
根据报告的活性度和大米消费模式计算年度有效剂量.

主要成果:

在全球范围内分析的大多数大米样本中,活动度低于国际限值的226Ra,232Th和40K.
泰国大米的40K度超过了400 Bq kg-1,尽管其他放射性核素仍在限制范围内.
尽管亚洲的大米消费量很高,但非洲的摄入年有效剂量最高,泰国报告了645.49μSv y-1.1的峰值.

结论:

虽然全球大米放射性核素水平通常在安全范围内,但有效剂量存在区域差异.
公共卫生官员和研究人员应监测大米放射性核素水平,特别是在高消费和高剂量地区.
这一审查为了解和管理来自大米消费的辐射暴露风险提供了关键资源.

关键词:

大米中的放射性核化物.每年的有效剂量.环境中的放射性辐射.食品安全食品安全辐射风险评估辐射风险评估

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