| Title: | "VOC emission caps constrained by air quality targets based on response surface model: A case study in the Pearl River Delta Region, China" |
| Author(s): | Hu Y; Shi B; Yuan X; Zheng C; Sha Q; Yu Y; Huang Z; Zheng J; |
| Address: | "Institute for Environmental and Climate Research, Jinan University, Guangzhou 511436, China. Guangdong Polytechnic of Environmental Protection Engineering, Guangzhou 528216, China. Institute for Environmental and Climate Research, Jinan University, Guangzhou 511436, China. Electronic address: huangzj@jnu.edu.cn. Institute for Environmental and Climate Research, Jinan University, Guangzhou 511436, China. Electronic address: zheng.junyu@gmail.com" |
| DOI: | 10.1016/j.jes.2022.09.004 |
| ISSN/ISBN: | 1001-0742 (Print) 1001-0742 (Linking) |
| Abstract: | "Because of the recent growth in ground-level ozone and increased emission of volatile organic compounds (VOCs), VOC emission control has become a major concern in China. In response, emission caps to control VOC have been stipulated in recent policies, but few of them were constrained by the co-control target of PM(2.5) and ozone, and discussed the factor that influence the emission cap formulation. Herein, we proposed a framework for quantification of VOC emission caps constrained by targets for PM(2.5) and ozone via a new response surface modeling (RSM) technique, achieving 50% computational cost savings of the quantification. In the Pearl River Delta (PRD) region, the VOC emission caps constrained by air quality targets varied greatly with the NO(x) emission reduction level. If control measures in the surrounding areas of the PRD region were not considered, there could be two feasible strategies for VOC emission caps to meet air quality targets (160 microg/m(3) for the maximum 8-hr-average 90th-percentile (MDA8-90%) ozone and 25 microg/m(3) for the annual average of PM(2.5)): a moderate VOC emission cap with <20% NOx emission reductions or a notable VOC emission cap with >60% NO(x) emission reductions. If the ozone concentration target were reduced to 155 microg/m(3), deep NO(x) emission reductions is the only feasible ozone control measure in PRD. Optimization of seasonal VOC emission caps based on the Monte Carlo simulation could allow us to gain higher ozone benefits or greater VOC emission reductions. If VOC emissions were further reduced in autumn, MDA8-90% ozone could be lowered by 0.3-1.5 microg/m(3), equaling the ozone benefits of 10% VOC emission reduction measures. The method for VOC emission cap quantification and optimization proposed in this study could provide scientific guidance for coordinated control of regional PM(2.5) and O(3) pollution in China" |
| Keywords: | *Volatile Organic Compounds/analysis *Air Pollutants/analysis Environmental Monitoring/methods *Air Pollution/prevention & control *Ozone/analysis China Particulate Matter/analysis Air quality targets Emission caps Monte Carlo (MC) simulations Response su; |
| Notes: | "MedlineHu, Ya'nan Shi, Bowen Yuan, Xin Zheng, Chuanzeng Sha, Qing'e Yu, Yufan Huang, Zhijiong Zheng, Junyu eng Netherlands 2022/12/16 J Environ Sci (China). 2023 Jan; 123:430-445. doi: 10.1016/j.jes.2022.09.004. Epub 2022 Sep 13" |
