| Title: | Dust emission reduction enhanced gas-to-particle conversion of ammonia in the North China Plain |
| Author(s): | Liu Y; Zhan J; Zheng F; Song B; Zhang Y; Ma W; Hua C; Xie J; Bao X; Yan C; Bianchi F; Petaja T; Ding A; Song Y; He H; Kulmala M; |
| Address: | "Aerosol and Haze Laboratory, Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, 100029, Beijing, China. liuyc@buct.edu.cn. Aerosol and Haze Laboratory, Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, 100029, Beijing, China. Hebei Technological Innovation Center for Volatile Organic Compounds Detection and Treatment in Chemical Industry, Hebei Chemical & Pharmaceutical College, Shijiazhuang, 050026, China. bxl5@163.com. Hebei Provincial Academy of Environmental Sciences, Shijiazhuang, 050037, China. bxl5@163.com. Institute for Atmospheric and Earth System Research, Faculty of Science, University of Helsinki, Helsinki, 00014, Finland. Joint International Research Laboratory of Atmospheric and Earth System Sciences, School of Atmospheric Sciences, Nanjing University, Nanjing, 210023, China. State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, 100871, Beijing, China. Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China" |
| DOI: | 10.1038/s41467-022-34733-4 |
| ISSN/ISBN: | 2041-1723 (Electronic) 2041-1723 (Linking) |
| Abstract: | "Ammonium salt is an important component of particulate matter with aerodynamic diameter less than 2.5 microm (PM(2.5)) and has significant impacts on air quality, climate, and natural ecosystems. However, a fundamental understanding of the conversion kinetics from ammonia to ammonium in unique environments of high aerosol loading is lacking. Here, we report the uptake coefficient of ammonia (gamma(NH3)) on ambient PM(2.5) varying from 2.2 x 10(-4) to 6.0 x 10(-4) in the North China Plain. It is significantly lower than those on the model particles under simple conditions reported in the literature. The probability-weighted gamma(NH3) increases obviously, which is well explained by the annual decrease in aerosol pH due to the significant decline in alkali and alkali earth metal contents from the emission source of dust. Our results elaborate on the complex interactions between primary emissions and the secondary formation of aerosols and the important role of dust in atmospheric chemistry" |
| Keywords: | Dust/analysis *Air Pollutants/analysis Ammonia Ecosystem Environmental Monitoring/methods Particulate Matter/analysis Aerosols/analysis China *Ammonium Compounds Alkalies Seasons; |
| Notes: | "MedlineLiu, Yongchun Zhan, Junlei Zheng, Feixue Song, Boying Zhang, Yusheng Ma, Wei Hua, Chenjie Xie, Jiali Bao, Xiaolei Yan, Chao Bianchi, Federico Petaja, Tuukka Ding, Aijun Song, Yu He, Hong Kulmala, Markku eng Research Support, Non-U.S. Gov't England 2022/11/14 Nat Commun. 2022 Nov 12; 13(1):6887. doi: 10.1038/s41467-022-34733-4" |
