Using hourly measurements to explore the role of secondary inorganic aerosol in PM2.5 during haze and fog in Hangzhou, China

doi:10.1007/s00376-014-4042-2

CORC > 自然资源部第一海洋研究所 > 自然资源部第一海洋研究所 > 业务部门 > 海洋环境与数值模拟研究室

	Using hourly measurements to explore the role of secondary inorganic aerosol in PM2.5 during haze and fog in Hangzhou, China
	Jansen, Roeland Cornelis 1; Shi Yang 1; Chen Jianmin 1; Hu YunJie 1; Xu Chang 2; Hong Shengmao 2; Li Jiao 2; Zhang Min 3
刊名	ADVANCES IN ATMOSPHERIC SCIENCES
	2014-11
卷号	31 期号:6 页码:1427-1434
关键词	haze secondary inorganic aerosol PM2.5 Yangtze River Delta
ISSN号	0256-1530
DOI	10.1007/s00376-014-4042-2
英文摘要	This paper explores the role of the secondary inorganic aerosol (SIA) species ammonium, NH (4) (+) , nitrate, NO (3) (-) , and sulfate, SO (4) (2-) , during haze and fog events using hourly mass concentrations of PM2.5 measured at a suburban site in Hangzhou, China. A total of 546 samples were collected between 1 April and 8 May 2012. The samples were analyzed and classified as clear, haze or fog depending on visibility and relative humidity (RH). The contribution of SIA species to PM2.5 mass increased to similar to 50% during haze and fog. The mass contribution of nitrate to PM2.5 increased from 11% during clear to 20% during haze episodes. Nitrate mass exceeded sulfate mass during haze, while near equal concentrations were observed during fog episodes. The role of RH on the correlation between concentrations of SIA and visibility was examined, with optimal correlation at 60%-70% RH. The total acidity during clear, haze and fog periods was 42.38, 48.38 and 45.51 nmol m(-3), respectively, indicating that sulfate, nitrate and chloride were not neutralized by ammonium during any period. The nitrate to sulfate molar ratio, as a function of the ammonium to sulfate molar ratio, indicated that nitrate formation during fog started at a higher ammonium to sulfate molar ratio compared to clear and haze periods. During haze and fog, the nitrate oxidation ratio increased by a factor of 1.6-1.7, while the sulfur oxidation ratio increased by a factor of 1.2-1.5, indicating that both gaseous NO2 and SO2 were involved in the reduced visibility.
资助项目	Priority Fields for Ph.D. Programs Foundation of the Ministry of Education of China[20110071130003]
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000341907500017
内容类型	期刊论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/3764]
专题	业务部门_海洋环境与数值模拟研究室
作者单位	1.Fudan Univ, Shanghai Key Lab Atmospher Particle Pollut & Prev, Dept Environm Sci & Engn, Shanghai 200433, Peoples R China; 2.Hangzhou Municipal Environm Monitoring Ctr, Hangzhou 310007, Zhejiang, Peoples R China; 3.State Ocean Adm, Inst Oceanog 1, Key Lab Data Anal & Applicat, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Jansen, Roeland Cornelis,Shi Yang,Chen Jianmin,et al. Using hourly measurements to explore the role of secondary inorganic aerosol in PM2.5 during haze and fog in Hangzhou, China[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2014,31(6):1427-1434.
APA	Jansen, Roeland Cornelis.,Shi Yang.,Chen Jianmin.,Hu YunJie.,Xu Chang.,...&Zhang Min.(2014).Using hourly measurements to explore the role of secondary inorganic aerosol in PM2.5 during haze and fog in Hangzhou, China.ADVANCES IN ATMOSPHERIC SCIENCES,31(6),1427-1434.
MLA	Jansen, Roeland Cornelis,et al."Using hourly measurements to explore the role of secondary inorganic aerosol in PM2.5 during haze and fog in Hangzhou, China".ADVANCES IN ATMOSPHERIC SCIENCES 31.6(2014):1427-1434.