高速公路路边沟中的轮胎磨损颗粒和金属:发生情况和潜在的运输路径
Maria Polukarova1, Elly Lucia Gaggini2, Elisabeth Rødland3
1Swedish National Road and Transport Research Institute Gothenborg (VTI), Regnbågsgatan 1, 417 55, Gothenburg, Sweden; Chalmers University of Technology, Department of Architecture and Civil Engineering, Water Environment Technology, SE-412 96, Gothenburg, Sweden.
Environmental pollution (Barking, Essex : 1987)
|March 5, 2025
概括
轮胎磨损颗粒 (TWP) 在路边土壤中发现,随着距离道路的距离而减少,但随着深度而变化. 它们的分布与相关,这表明交通污染物的复杂运输途径.
科学领域:
- 环境科学 环境科学
- 环境化学环境化学
- 土壤科学 土壤科学
背景情况:
- 轮胎磨损颗粒 (TWP) 是一个重要的环境污染物,在路边土壤中分布在很大程度上未被研究.
- 了解TWP的发生对于评估交通相关污染物的环境风险至关重要.
研究的目的:
- 描述路边土壤中TWP和相关金属的发生和分布.
- 调查TWP与土壤中的金属污染物之间的相关性.
- 了解TWP及其相关金属在路边环境中的运输机制.
主要方法:
- 从瑞典国家高速公路沿线的两条道路沟里采集了土壤样本,深度和距离各不相同.
- 轮胎磨损颗粒 (TWP) 在小于500微米的部分使用热解气体染色学质谱法 (PYR-GC/MS) 进行了分析.
- 量化和统计分析了TWP和相关金属 (Zn,Co,Cr) 的度.
主要成果:
- 土壤中的TWP度在0.74 ± 0.20~12.40 ± 1.88 mg/kg干重之间.
- TWP度通常随着距离道路的距离的增加而下降,类似于.
- TWP分布因深度和距离而异,一些金属显示不同的模式,表明复杂的运输和潜在的漏.
结论:
- 路边土壤是TWP的重要沉点,分布受道路距离和土壤深度的影响.
- 在一个沟中观察到TWP和之间的强烈相关性,表明共享的运输路径,而两个沟中的金属相关性表明与交通相关的起源.
- 这些发现对于准确评估土壤生态系统中TWP和其他交通相关污染物的风险至关重要.
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