确定控制从临时储存坑中挖掘的页岩中释放的潜在有毒元素的空间分布的地化学参数
Shoji Suzuki1,2, Toshihiko Miura3, Kenichi Ito4
1Department of Agricultural Chemistry, Graduate School of Agriculture, Meiji University, 1-1-1, Higashimita, Tama, Kawasaki, Kanagawa, 214-8571, Japan.
Environmental geochemistry and health
|June 10, 2025
概括
这项研究分析了挖掘过的页岩中的潜在有毒元素 (PTEs),发现无形铁和体颗粒等地化学因素控制了PTE释放. 从10个混合样本中估计PTE的误差为30%.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 土壤科学 土壤科学
背景情况:
- 含有潜在有毒元素 (PTEs) 的挖掘岩石需要进行处理,以便在建筑中重复使用.
- 了解PTE空间分布和控制地化学参数对于有效的处理设计至关重要.
研究的目的:
- 为了确定在挖掘页岩中PTE的空间分布.
- 为了确定影响页岩中PTE释放的地化学参数.
- 评估从混合样本中估计释放的PTE的准确性.
主要方法:
- 从一个临时存储坑收集了50个页岩样本.
- 对释放的样本和PTE总量进行分析.
- 确定控制PTE分布的地化学特性.
主要成果:
- 在释放和PTE总量之间没有发现线性关系.
- 与无形铁含量相关的和释放.
- 与无机体颗粒 (<0.45微米) 相关的和释放.
- 从10个混合样本中估计释放的PTE产生~30%的误差.
结论:
- 控制PTE释放的地化学参数因元素类型而异.
- 来自储存坑的预制岩石样本可以以30%的误差估计释放的PTE.
- 实际释放的PTE与具有特定铁和体颗粒含量的岩石的估计相一致.
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