在使用期间,青路面在太阳辐射下的排放行为
Ming Jia1, Hui Li2, Xue Zhang3
1Urban Mobility Institute, College of Transportation Engineering, Tongji University, Cao'an Rd, Shanghai 4800, China; Key Laboratory of Road and Traffic Engineering of the Ministry of Education, College of Transportation Engineering, Tongji University, Cao'an Rd, Shanghai 4800, China; School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
Journal of hazardous materials
|January 29, 2025
概括
青路面会排放有毒烟雾,包括挥发性有机化合物 (VOC) 和多环芳 (PAH). 在使用寿命期间的太阳辐射释放出额外的污染物,随着时间的推移,排放量会减少.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 公共卫生 公共卫生
背景情况:
- 青路面排放带来健康和环境风险,特别是挥发性有机化合物 (VOC) 和多环芳 (PAH).
- 研究的重点是高温建筑排放,太阳辐射下的长期低温使用寿命排放研究不足.
- 了解排放成分趋势及其与青成分的联系对于公共安全至关重要.
研究的目的:
- 在模拟的太阳辐射和热量下调查老青路面的长期排放.
- 为了比较太阳辐射下的排放概况与简单的加热.
- 为了确定青成分,老化时间和排放特征之间的关系.
主要方法:
- 三种常见的青类型经历了加速老化.
- 陈旧的青样本被暴露在70°C的人工太阳辐射和70°C的加热中.
- 分析了排放量,以确定挥发性有机化合物 (VOC) 和多环芳 (PAH).
主要成果:
- 青老化释放的基 (C12-C20),单环和PAHs,与芳香和和分数相关.
- 与仅热相比,太阳辐射显著增加了PAHs (甲,甲),循环 (C14-C25) 和长链 (C15-C18) 的释放.
- 青排放量呈现出四级减排趋势,随着老化持续时间的增加.
结论:
- 在青路面使用寿命期间的太阳辐射促进了特定污染物的释放,超出了简单加热的污染物.
- 青的组成和老化显著影响排放概况.
- 排放水平随着时间的推移而下降,但太阳辐射引入了独特的危险化合物,突出了路面使用寿命期间的潜在风险.
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