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用石作为土壤修改剂的放射性环境影响评估:土壤可用性修改和放射性影响评估
J Guillén1, A Salas1, J G Muñoz-Muñoz1
1LARUEX, Dpt. Applied Physics, Faculty of Veterinary Sciences, Universidad de Extremadura, Adva. Universidad, s/n, 10004, Cáceres, Spain.
Chemosphere
|August 20, 2025
概括
在地中海土壤中改变了放射性核酸的分布. 虽然的某些分数增加,但和的可交换分数减少,表明植物吸收和食物链污染风险的潜在变化.
科学领域:
- 环境科学
- 土壤科学
- 放射化学
背景情况:
- 石是一种酸盐工业的副产品,含有重金属和放射性核酸,如-226,-210和-210.
- 它作为土壤调节剂的使用符合可持续性目标,但存在将污染物引入人类食物链的风险.
- 这些放射性核酸的植物吸收受其与土壤颗粒的联系的影响.
研究的目的:
- 在典型的地中海土壤中研究基对放射性核酸分布的影响.
- 通过顺序提取,分析的应用如何改变放射性核素与土壤颗粒的关联.
- 评估人类食物链和非人类生物群的潜在风险.
主要方法:
- 在典型的地中海土壤中应用石膏.
- 在原始土壤,石和修改土壤上使用了两种不同的顺序提取方案.
- 分析了放射性核酸 (,-226,-210) 与土壤部分的分布和关联.
主要成果:
- 在修改后的土壤中,化石的应用改变了放射性核酸的结合模式.
- 观察到与稀释酸和适度可降解分量的相关性增加.
- -226的可交换分数减少和-226和-210的可降解分数增加.
- 在修改后的土壤中放射性核素的分布不能从单个土壤和石的分布中预测.
- 非人类生物群的剂量仍低于国际基准.
结论:
- 在地中海土壤中显著改变了放射性核酸分离.
- 和分量的变化表明生物可用性发生变化,影响了食物链的转移.
- 尽管分布发生了变化,但基于剂量,对非人类生物群的环境风险被认为是低的.
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