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在大型石化综合体中发现了严重的光化学污染:中国北方的一个典型案例研究

Wei Wei¹, Binbin Yao², Xuemei Yang²

¹Department of Environmental Science and Engineering, Beijing University of Technology, Beijing, 100124, China; Key Laboratory of Beijing on Regional Air Pollution Control, Beijing, 100124, China.

Environmental pollution (Barking, Essex : 1987)

|January 14, 2024

概括

石化综合体释放出大量挥发性有机化合物 (VOC),造成严重的局部臭氧污染. 这种污染是由高前体和影响周围地区驱动的.

科学领域:

环境化学环境化学
大气科学大气科学
空气污染研究研究

背景情况:

石化复合物 (PC) 是挥发性有机化合物 (VOC) 排放的主要来源.
当地的光化学污染是与PC相关的重大环境问题.
了解这种污染的特征和形成对于减轻污染至关重要.

研究的目的:

研究来自中国北部大型石化综合体的当地光化学污染的特征,形成和影响.
在PC中分析前体和气象条件在臭氧 (O3) 污染中的作用.
量化光化学污染形成潜力和跨境运输.

主要方法:

用一个改进的0D化学模型进行模拟.
分析的总碳化合物 (THC) 和氧化 (NOx) 含量.
根据MDA1O3水平评估的臭氧 (O3) 污染.
评估对NOx和THCs的污染敏感性.
计算了O3,HCHO和CH3CHO的光化学污染生产率.

主要成果:

研究中的PC表现出富含VOCs的大气,THC/NOx比率高.
观察到严重的臭氧污染,主要归因于高前体度而不是气象学.
对氧化的污染敏感性高于对THC的敏感性.
对O3,HCHO和CH3CHO而言,光化学污染的生产率明显高于城市地区.
大约70%的产生的光化学污染被运送到周边地区.

结论:

石油化工综合体的高VOC和NOx排放导致了当地严重的臭氧污染.
对NOx的敏感性表明有针对性的排放控制可以有效.
由于跨境运输,石化综合体对周围环境造成了大量的光化学污染危险.

关键词:

输出贡献为输出贡献.石化复合体是石油化学复合体之一.摄影化学污染摄影化学污染生产潜力的生产潜力.

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