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[在北京的典型使用溶剂的工业园区中挥发性有机化合物的污染特征和来源分配]

Rui Liu¹, Zhen Yao², Xiao-Hui Hua²

¹Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China.

Huan jing ke xue= Huanjing kexue

|October 25, 2024

概括

在北京的挥发性有机化合物 (VOC) 污染.

科学领域:

环境科学环境科学
大气化学大气化学

背景情况:

挥发性有机化合物 (VOC) 是重要的空气污染物,有助于臭氧形成并影响空气质量.
工业园区是VOC排放的主要来源,原因是溶剂使用和制造工艺.

研究的目的:

在北京使用溶剂的工业园区调查VOC的污染特征,来源分配和臭氧形成潜力 (OFP).
为了比较加热和不加热期间之间的VOC污染.

主要方法:

使用BCT-7800A PLUS VOC在线监测系统进行环境VOC测量.
采用正矩阵因子化 (PMF) 模型来分配挥发性有机化合物的来源.
分析了基于VOC物种及其反应性的臭氧形成潜力 (OFP).

主要成果:

从2023年1月到6月的平均VOC度为104.21±91.31μg·m−3.
阿尔干是最丰富的VOC物种. 在加热期间,VOC度更高.
确定的主要VOC来源:工业涂料 (26.52%),电子设备制造 (24.59%) 和交通排放 (18.97%).
工业涂料,交通和燃料燃烧来源在加热期间的贡献更大.
OVOCs,olefins和芳香碳化合物是OFP的主要来源,电子设备制造业是夏季最大的来源.

结论:

工业涂料,电子设备制造和交通排放是需要控制措施的关键来源.
挥发性有机化合物的季节性变化,特别是在加热期间,需要有针对性的减排战略.
控制特定的VOC物种和来源对于减轻臭氧形成和改善工业区空气质量至关重要.

关键词:

加热期的加热时间.臭氧的形成潜力 (OFP)污染的特点污染的特点使用溶剂的工业园区.在来源分配分配.挥发性有机化合物 (VOCs) 是一种挥发性有机化合物.

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