银同位素:一种用于追踪炼厂产生的污染物的工具
Aleš Vaněk1, Maria Vaňková2, Martin Mihaljevič2
1Department of Soil Science and Soil Protection, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Prague 6, Czech Republic.
Environmental pollution (Barking, Essex : 1987)
|September 16, 2023
概括
银 (Ag) 同位素在炼厂排放污染的土壤中显示出明显的人为特征. 这项研究证明了Ag同位素.
科学领域:
- 环境地质化学环境地质化学
- 同位素地球化学 同位素地球化学
- 金工业是金工业的一个方面.
背景情况:
- 银 (Ag-Pb) 炼厂的排放将Ag引入环境,需要方法来追踪其起源和命运.
- 了解环境样本中的Ag同位素变化对于源分配和地球化学过程监测至关重要.
研究的目的:
- 报告炼厂污染的矿石,金样本和森林土壤中的Ag度和同位素数据 (δ109Ag).
- 调查Ag同位素作为人为Ag来源和地化学过程的标记物的潜力.
主要方法:
- 在各种环境矩阵中分析Ag度和稳定的Ag同位素 (δ109Ag).
- 检查矿石中的同位素特征,金副产品 (,飞灰,渣,) 和土壤概况.
主要成果:
- 在人为材料中观察到大范围的δ109Ag值 (-0.8到+2.4‰),反映了原始矿石的特征,而不是炼分离.
- 土壤配置文件显示,与枯竭的基岩Ag (≤+2.9‰) 相比,在上方的地平线上具有较轻的金起源的Ag (≤+0.8‰).
- 人类和地质气源的三级混合解释了观察到的土壤同位素模式,没有沉积后分离.
结论:
- Ag同位素有效地追踪人为的Ag阶段和炼厂排放的变化.
- 稳定的Ag同位素作为人为Ag来源和环境Ag负载的可靠代理.
- 土壤中Ag的地球化学稳定性防止了沉积后的同位素变化,验证了其作为标记物的使用.
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