Evaluation on the role of sulfuric acid in the mechanisms of new   particle formation for Beijing case

doi:10.5194/acp-11-12663-2011

CORC > 北京大学 > 环境科学与工程学院

	Evaluation on the role of sulfuric acid in the mechanisms of new particle formation for Beijing case
	Wang, Z. B. ; Hu, M. ; Yue, D. L. ; Zheng, J. ; Zhang, R. Y. ; Wiedensohler, A. ; Wu, Z. J. ; Nieminen, T. ; Boy, M.
刊名	atmospheric chemistry and physics
	2011
关键词	NUCLEATION MODE PARTICLES ATMOSPHERIC NUCLEATION AEROSOL FORMATION TERNARY NUCLEATION GROWTH RATES ENVIRONMENTS CONNECTION EVENTS VAPORS
DOI	10.5194/acp-11-12663-2011
英文摘要	New particle formation (NPF) is considered as an important mechanism for gas-to-particle transformation, and gaseous sulfuric acid is believed as a crucial precursor. Up to now few field-based studies on nucleation mechanisms and the role of sulfuric acid were conducted in China. In this study, simultaneously measurements of particle number size distributions and gaseous sulfuric acid concentrations were performed from July to September in 2008. Totally, 22 new particle formation events were observed during the entire 85 campaign days. The results show that in the case of both higher source and sink values, the result of the competition between source and sink is more likely the key limiting factor to determine the observation of NPF events in Beijing. The concentrations of gaseous sulfuric acid show good correlations with freshly nucleated particles (N3-6) and formation rates (J(3) and J(1.5)). The power-law relationship between H2SO4 concentration and N3-6 or J is adopted to explore the nucleation mechanism. The exponents are showed a great range (from 1 to 7). More than half of the NPF events exhibit an exponent larger than 2.5. For these cases, the thermodynamic process works better than the activation or kinetic nucleation theories to explain the nucleation events in urban atmosphere of Beijing.; Meteorology & Atmospheric Sciences; SCI(E); 16; ARTICLE; 24; 12663-12671; 11
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/324459]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Wang, Z. B.,Hu, M.,Yue, D. L.,et al. Evaluation on the role of sulfuric acid in the mechanisms of new particle formation for Beijing case[J]. atmospheric chemistry and physics,2011.
APA	Wang, Z. B..,Hu, M..,Yue, D. L..,Zheng, J..,Zhang, R. Y..,...&Boy, M..(2011).Evaluation on the role of sulfuric acid in the mechanisms of new particle formation for Beijing case.atmospheric chemistry and physics.
MLA	Wang, Z. B.,et al."Evaluation on the role of sulfuric acid in the mechanisms of new particle formation for Beijing case".atmospheric chemistry and physics (2011).