Persistent sulfate formation from London Fog to Chinese haze

doi:10.1073/pnas.1616540113

CORC > 北京大学 > 环境科学与工程学院

	Persistent sulfate formation from London Fog to Chinese haze
	Wang, Gehui ; Zhang, Renyi ; Gomez, Mario E. ; Yang, Lingxiao ; Zamora, Misti Levy ; Hu, Min ; Lin, Yun ; Peng, Jianfei ; Guo, Song ; Meng, Jingjing ; Li, Jianjun ; Cheng, Chunlei ; Hu, Tafeng ; Ren, Yanqin ; Wang, Yuesi ; Gao, Jian ; Cao, Junji ; An, Zhisheng ; Zhou, Weijian ; Li, Guohui ; Wang, Jiayuan ; Tian, Pengfei ; Marrero-Ortiz, Wilmarie ; Secrest, Jeremiah ; Du, Zhuofei ; Zheng, Jing ; Shang, Dongjie ; Zeng, Limin ; Shao, Min ; Wang, Weigang ; Huang, Yao ; Wang, Yuan ; Zhu, Yujiao ; Li, Yixin ; Hu, Jiaxi ; Pan, Bowen ; Cai, Li ; Cheng, Yuting ; Ji, Yuemeng ; Zhang, Fang ; Rose
刊名	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
	2016
关键词	sulfate aerosol severe haze pollution human health climate IONIZATION MASS-SPECTROMETRY ORGANIC AEROSOL FORMATION LIQUID SULFURIC-ACID HETEROGENEOUS REACTIONS CHEMISTRY OXIDATION POLLUTION RADICALS AMMONIUM DUST
DOI	10.1073/pnas.1616540113
英文摘要	Sulfate aerosols exert profound impacts on human and ecosystem health, weather, and climate, but their formation mechanism remains uncertain. Atmospheric models consistently underpredict sulfate levels under diverse environmental conditions. From atmospheric measurements in two Chinese megacities and complementary laboratory experiments, we show that the aqueous oxidation of SO2 by NO2 is key to efficient sulfate formation but is only feasible under two atmospheric conditions: on fine aerosols with high relative humidity and NH3 neutralization or under cloud conditions. Under polluted environments, this SO2 oxidation process leads to large sulfate production rates and promotes formation of nitrate and organic matter on aqueous particles, exacerbating severe haze development. Effective haze mitigation is achievable by intervening in the sulfate formation process with enforced NH3 and NO2 control measures. In addition to explaining the polluted episodes currently occurring in China and during the 1952 London Fog, this sulfate production mechanism is widespread, and our results suggest a way to tackle this growing problem in China and much of the developing world.; National Natural Science Foundation of China [21190052]; Strategic Priority Research Program of the CAS [41325014, XDA05100103, XDB05020401]; Robert A. Welch Foundation [A-1417]; Ministry of Science and Technology of China [2013CB955800]; collaborative research program by Texas AM University; National Basic Research Program, China Ministry of Science and Technology [2013CB228503]; China Ministry of Environmental Protection's Special Funds for Scientific Research on PublicWelfare [20130916]; National Science Foundation Graduate Research Fellowship Program; NASA Earth and Space Science Fellowship Program; SCI(E); ARTICLE; renyi-zhang@tamu.edu; mjmolina@ucsd.edu; 48; 13630-13635; 113
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/458353]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Wang, Gehui,Zhang, Renyi,Gomez, Mario E.,et al. Persistent sulfate formation from London Fog to Chinese haze[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2016.
APA	Wang, Gehui.,Zhang, Renyi.,Gomez, Mario E..,Yang, Lingxiao.,Zamora, Misti Levy.,...&Rose.(2016).Persistent sulfate formation from London Fog to Chinese haze.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA.
MLA	Wang, Gehui,et al."Persistent sulfate formation from London Fog to Chinese haze".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2016).