大气复合污染条件下新粒子生成和增长机制及其环境影响

doi:10.6023/A16020105

CORC > 北京大学 > 环境科学与工程学院

	大气复合污染条件下新粒子生成和增长机制及其环境影响; Mechanism of New Particle Formation and Growth as well as Environmental Effects under Complex Air Pollution in China
	胡敏 ; 尚冬杰 ; 郭松 ; 吴志军
刊名	化学学报
	2016
关键词	新粒子生成颗粒物增长转化机制环境效应大气复合污染 new particle formation particle growth transformation mechanism environmental impact complex air pollution CLOUD CONDENSATION NUCLEI NUMBER SIZE DISTRIBUTIONS ATMOSPHERIC NANOPARTICLE GROWTH SULFURIC-ACID CONCENTRATION SECONDARY ORGANIC AEROSOL FORMATION EVENTS LONG-TERM URBAN ATMOSPHERE RIVER DELTA NUCLEATION
DOI	10.6023/A16020105
英文摘要	新粒子生成与增长是一个从分子到纳米颗粒物的微观尺度演变过程,对区域到全球尺度空气质量和气候造成显著影响.总结了国内外对新粒子生成与增长物理化学机制的研究进展和局限性.提出以揭示新粒子生成、增长及其产生环境效应的机制为核心目标,利用外场观测、烟雾箱模拟和模式模拟等多种手段,开发和应用先进的研究技术,辨识参与并促使快速成核的关键前体物种,弄清驱动新粒子初始和后续增长的化学和物理机制,以揭示大气复合污染条件下快速成核和持续增长的条件与机制并评价新粒子对大气环境的影响.在全面理解大气复合污染条件下成核和增长机制及其环境效应的基础上提高对区域霾形成机制的认识,也推进国际相关领域对污染大气环境新粒子生成与增长机制普遍性和差异性的研究.; New particle formation (NPF) and its subsequent growth plays a key role in air quality and climate change at regional and global scales. Especially under complex air pollution in China, nucleation and growth can be highly efficient, claimed to be a main source of cloud condensation nuclei (CCN) and an important cause of secondary aerosol pollution. Currently, the mechanism of particle formation and growth as well as its environmental effects are still poorly understood. Thereby, fully understanding of the atmospheric nucleation and subsequent growth still presents a big challenge to atmospheric chemistry researches. This study reviews the current results from studies on mechanisms and environmental effects of atmospheric nucleation and growth. We summarize that traditional nucleation theories such as binary nucleation of H2SO4-H2O, ternary nucleation of H2SO4-NH3-H2O, ion-induced nucleation are not capable in explaining new particle formation under complex air pollution, while newly proposed mechanisms such as organic acids and amine induced nucleation were not verified because of technique limitation. We propose that the future researches should focus on identifying the key chemical precursor response for driving nucleation and initial and subsequent growth, and understand the physical and chemical processing of new particle formation and growth. In particularly, application and development of novel techniques, such as APi-TOF-CIMS, PSM, Nano-HTDMA in new particle formation study is very important. Also, future researches should establish whole process tracking on new particle formation, from precursor, nucleation, growth till the environmental effects, by integrating field observation, chamber simulation, and modelling. Currently, the mechanism of highly efficient nucleation and rapid growth taking place under complex air pollution in China is urgently needed to be in-depth studied in order to improve our understanding of regional haze formation. This could be helpful to understand the similarity and difference in the nucleation mechanism between clean and polluted atmospheric environments.; 国家自然科学基金,国家重点基础研究发展计划,中国科学院战略性先导科技专项; SCI(E); 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); minhu@pku.edu.cn; 5; 385-391; 74
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/492307]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	胡敏,尚冬杰,郭松,等. 大气复合污染条件下新粒子生成和增长机制及其环境影响, Mechanism of New Particle Formation and Growth as well as Environmental Effects under Complex Air Pollution in China[J]. 化学学报,2016.
APA	胡敏,尚冬杰,郭松,&吴志军.(2016).大气复合污染条件下新粒子生成和增长机制及其环境影响.化学学报.
MLA	胡敏,et al."大气复合污染条件下新粒子生成和增长机制及其环境影响".化学学报 (2016).