DOI: 10.1016/j.atmosenv.2017.05.035
Scopus记录号: 2-s2.0-85020042008
论文题名: Role identification of NH3 in atmospheric secondary new particle formation in haze occurrence of China
作者: Jiang B ; , Xia D
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 163 起始页码: 107
结束页码: 117
语种: 英语
英文关键词: Haze mitigation
; New particle formation
; NH3
; PM2.5
Scopus关键词: Kinetic theory
; Kinetic theory of gases
; Monte Carlo methods
; Nitrogen oxides
; Particles (particulate matter)
; Pollution
; Uncertainty analysis
; Aerosol particulate matters
; Atmospheric concentration
; Current restrictions
; Haze mitigation
; New particle formation
; NH<sub>3</sub>
; Particulate formation
; PM2.5
; Sulfur dioxide
; ammonia
; nitrogen dioxide
; sulfur dioxide
; aerosol
; aerosol formation
; ammonium
; atmospheric gas
; atmospheric pollution
; chemical compound
; concentration (composition)
; haze
; identification method
; oxidation
; particulate matter
; reaction kinetics
; air pollution
; Article
; calculation
; China
; haze
; hydrolysis
; kinetics
; Monte Carlo method
; oxidation
; particulate matter
; priority journal
; China
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Haze pollution in China, dominated by the aerosol particulate matters smaller than 2.5 μm (PM2.5) has raised much concern over the past decade. PM2.5 is principally derived from secondary new particulate formation (NPF) with main precursors SO2, NO2, NH3 and organic compounds (OC), where NH3 is the only alkaline inorganic gas. However, due to the lack understanding of NH3's role in NPF, few attention has been paid to NH3, which hinders the haze mitigation in China. In this work, the role of NH3 in NPF is investigated theoretically with a new kinetic model. Combining the oxidation of SO2/NO2 in SO2/NO2/NH3/H2O/air system and the aggregation of clusters in H2SO4/HNO3/NH3/OC system, this model has been established based on gas-kinetic theory, and tested upon uncertainty analysis with Monte Carlo method. The results of NPF calculations at the atmospheric concentration of each precursor show that NH3 is able to enhance NPF indirectly by facilitating conversions of SO2 and NO2, and directly by promoting aggregations of H2SO4, HNO3, NH3 and OC. The major effect of NH3 on NPF is found to be the enhancement of conversion fractions for SO2 and NO2 during oxidation processes. In addition, the promotion in contribution of HNO3 to NPF due to NH3 has been particularly observed. Therefore, controlling the emission of NH3 strictly as current restrictions on SO2 and NOx is reasonable to mitigating the haze pollution in China which has much higher atmospheric NH3 concentration over the global average level. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82649
Appears in Collections: 气候变化事实与影响
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作者单位: School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, China; Beijing Key Laboratory of Energy Saving and Emission Reduction for Metallurgical Industry, University of Science and Technology Beijing, Beijing, China
Recommended Citation:
Jiang B,, Xia D. Role identification of NH3 in atmospheric secondary new particle formation in haze occurrence of China[J]. Atmospheric Environment,2017-01-01,163