Effects of VOC emissions from chemical industrial parks on regional O3-PM2.5 compound pollution in the Yangtze River Delta

被引:9
作者
He, Li [1 ]
Duan, Yusen [2 ]
Zhang, Yan [1 ,3 ,4 ]
Yu, Qi [1 ]
Huo, Juntao [2 ]
Chen, Jia [2 ]
Cui, Huxiong [2 ]
Li, Yuewu [2 ]
Ma, Weichun [1 ,3 ,4 ]
机构
[1] Fudan Univ, Shanghai Key Lab Particle Pollut & Prevent LAP3, Dept Environm Sci & Engn, Shanghai 200438, Peoples R China
[2] Shanghai Environm Monitoring Ctr, Shanghai 200235, Peoples R China
[3] Fudan Univ, Inst Atmospher Sci, Shanghai 200438, Peoples R China
[4] Shanghai Inst Ecochongming SIEC, Shanghai 200062, Peoples R China
关键词
compound pollution; VOGs; Chemical industrial parks; SOA; CAMx; VOLATILE ORGANIC-COMPOUNDS; ATMOSPHERIC OXIDATION CAPACITY; OZONE FORMATION POTENTIALS; ANTHROPOGENIC EMISSIONS; SOURCE PROFILES; AIR-POLLUTANTS; CHINA; INVENTORY; FACILITIES; SPECIATION;
D O I
10.1016/j.scitotenv.2023.167503
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Ozone (O-3) and fine particulate matter (PM2.5) compound pollution has emerged as a primary form of air pollution in Chinese urban. Volatile organic compounds (VOCs), as common precursors of O-3 and PM2.5, play a significant role in air pollution control. Chemical industrial parks (CIPs) are crucial emission sources of VOCs and have garnered significant attention. This study focused on 142 CIPs located in the Yangtze River Delta (YRD) to investigate the characteristics of VOC emissions from CIPs and their impact on O-3-PM2.5 compound pollution, considering the enhanced atmospheric oxidation capacity (AOC). The Comprehensive Air Quality Model with Extensions (CAMx) model was employed for this analysis. The results show that VOC emissions from CIPs contributed significantly to regional O-3 and secondary organic aerosol (SOA), accounting for 17.1 % and 18.18 % of the anthropogenic sources, respectively. Regions exhibiting the highest contributions were located along the Hangzhou Bay. Compared with 2014, an elevation in the contribution of VOC emissions from CIPs to the annual average concentrations of MDA8 O-3 and SOA in the YRD in 2017 by 0.069 mu g/m(3) and 0.007 mu g/m(3), respectively. During episodes of compound pollution, the concentration of atmospheric oxidant (HOx + NO3) was 28.65 % higher than during clean days, and significant positive correlations were observed between hydrogen oxygen radicals (HOx) and maximum daily 8-h average (MDA8 O-3) as well as between HOx and SOA, exhibiting correlation coefficients of 0.86 and 0.48, respectively. Effective control measures for VOC emissions, particularly from the pharmaceutical and petrochemical industry parks located along Hangzhou Bay, are essential in curtailing the production rate of HOx and in regulating AOC levels in the YRD. Maintaining the daily average HOx concentration below 10 ppt would be a valuable strategy in achieving coordinated control of O-3 and SOA, thus aiding in the alleviation of O-3-PM2.5 compound pollution in the YRD.
引用
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页数:15
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