气候变化领域集成服务门户(CCPortal): Rapid sulfuric acid-dimethylamine nucleation enhanced by nitric acid in polluted regions

CCPortal

DOI	10.1073/pnas.2108384118
	Rapid sulfuric acid-dimethylamine nucleation enhanced by nitric acid in polluted regions
	Liu L.; Yu F.; Du L.; Yang Z.; Francisco J.S.; Zhang X.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:35
英文摘要	Recent research [Wang et al., Nature 581, 184-189 (2020)] indicates nitric acid (NA) can participate in sulfuric acid (SA)-ammonia (NH3) nucleation in the clean and cold upper free troposphere, whereas NA exhibits no obvious effects at the boundary layer with relatively high temperatures. Herein, considering that an SA-dimethylamine (DMA) nucleation mechanism was detected in megacities [Yao et al., Science 361, 278-281 (2018)], the roles of NA in SA-DMA nucleation are investigated. Different from SA-NH3 nucleation, we found that NA can enhance SA-DMA-based particle formation rates in the polluted atmospheric boundary layer, such as Beijing in winter, with the enhancement up to 80-fold. Moreover, we found that NA can promote the number concentrations of nucleation clusters (up to 27- fold) and contribute 76% of cluster formation pathways at 280 K. The enhancements on particle formation by NA are critical for particulate pollution in the polluted boundary layer with relatively high NA and DMA concentrations. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Atmospheric aerosol; Nitric acid; Nucleation; Polluted regions; Sulfuric acid-dimethylamine
语种	英语
scopus关键词	dimethylamine; nitric acid; sulfuric acid; aerosol; air pollution; Article; China; city; concentration (parameter); nucleation; particulate matter; physical phenomena; winter
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238652
作者单位	Key Laboratory of Cluster Science, Ministry of Education of China, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China; Atmospheric Sciences Research Center, University at Albany, Albany, NY 12203, United States; Environment Research Institute, Shandong University, Qingdao, 266237, China; Department of Earth and Environmental Sciences, University of Pennsylvania, Philadelphia, PA 19104, United States; Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, United States
推荐引用方式 GB/T 7714	Liu L.,Yu F.,Du L.,et al. Rapid sulfuric acid-dimethylamine nucleation enhanced by nitric acid in polluted regions[J],2021,118(35).
APA	Liu L.,Yu F.,Du L.,Yang Z.,Francisco J.S.,&Zhang X..(2021).Rapid sulfuric acid-dimethylamine nucleation enhanced by nitric acid in polluted regions.Proceedings of the National Academy of Sciences of the United States of America,118(35).
MLA	Liu L.,et al."Rapid sulfuric acid-dimethylamine nucleation enhanced by nitric acid in polluted regions".Proceedings of the National Academy of Sciences of the United States of America 118.35(2021).