Chemical characteristics of size-resolved aerosols in winter in Beijing

doi:10.1016/j.jes.2014.06.004

CORC > 北京大学 > 环境科学与工程学院

	Chemical characteristics of size-resolved aerosols in winter in Beijing
	Sun, Kang ; Qu, Yu ; Wu, Qiong ; Han, Tingting ; Gu, Jianwei ; Zhao, Jingjing ; Sun, Yele ; Jiang, Qi ; Gao, Ziqi ; Hu, Min ; Zhang, Yuanhang ; Lu, Keding ; Nordmann, Stephan ; Cheng, Yafang ; Hou, Li ; Ge, Hui ; Furuuchi, Masami ; Hata, Mitsuhiko ; Liu, Xingang
刊名	journal of environmental sciences china
	2014
关键词	Aerosol Size distribution Chemical characteristics Beijing ATMOSPHERIC PARTICULATE POLLUTANTS POSITIVE MATRIX FACTORIZATION SOURCE APPORTIONMENT PRD CAMPAIGN CHINA PM2.5 SUMMER DISTRIBUTIONS VISIBILITY SCATTERING
DOI	10.1016/j.jes.2014.06.004
英文摘要	Size-resolved aerosols were continuously collected by a Nano Sampler for 13 days at an urban site in Beijing during winter 2012 to measure the chemical composition of ambient aerosol particles. Data collected by the Nano Sampler and an ACSM (Aerodyne Aerosol Chemical Speciation Monitor) were compared. Between the data sets, similar trends and strong correlations were observed, demonstrating the validity of the Nano Sampler. PM10 and PM2.5 concentrations during the measurement were 150.5 +/- 96.0 mu g/m(3) (mean +/- standard variation) and 106.9 +/- 71.6 mu g/m(3), respectively. The PM2.5/PM10 ratio was 0.70 +/- 0.10, indicating that PM2.5 dominated PM10. The aerosol size distributions showed that three size bins of 0.5-1, 1-2.5 and 2.5-10 mu m contributed 21.8%, 23.3% and 26.0% to the total mass concentration (TMC), respectively. OM (organic matter) and SIA (secondary ionic aerosol, mainly SO42-, NO3- and NH4+) were major components of PM2.5. Secondary compounds (SIA and secondary organic carbon) accounted for half of TMC (about 49.8%) in PM2.5, and suggested that secondary aerosols significantly contributed to the serious particulate matter pollution observed in winter. Coal burning, biomass combustion, vehicle emissions and SIA were found to be the main sources of PM2.5. Mass concentrations of water-soluble ions and undetected materials, as well as their fractions in TMC, strikingly increased with deteriorating particle pollution conditions, while OM and EC (elemental carbon) exhibited different variations, with mass concentrations slightly increasing but fractions in TMC decreasing. (C) 2014 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000340738000010&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Environmental Sciences; SCI(E); EI; PubMed; 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 9; ARTICLE; liuxingang@bnu.edu.cn; 8; 1641-1650; 26
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/158751]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Sun, Kang,Qu, Yu,Wu, Qiong,et al. Chemical characteristics of size-resolved aerosols in winter in Beijing[J]. journal of environmental sciences china,2014.
APA	Sun, Kang.,Qu, Yu.,Wu, Qiong.,Han, Tingting.,Gu, Jianwei.,...&Liu, Xingang.(2014).Chemical characteristics of size-resolved aerosols in winter in Beijing.journal of environmental sciences china.
MLA	Sun, Kang,et al."Chemical characteristics of size-resolved aerosols in winter in Beijing".journal of environmental sciences china (2014).