Increase of ambient formaldehyde in Beijing and its implication for VOC   reactivity

doi:10.1016/j.cclet.2012.06.015

CORC > 北京大学 > 环境科学与工程学院

	Increase of ambient formaldehyde in Beijing and its implication for VOC reactivity
	Zhang, Qian ; Shao, Min ; Li, Yang ; Lu, Si Hua ; Yuan, Bin ; Chen, Wen Tai
刊名	中国化学快报英文版
	2012
关键词	Formaldehyde Satellite observations Temporal variations VOC reactivity
DOI	10.1016/j.cclet.2012.06.015
英文摘要	Influencing atmospheric OH radical budget and tropospheric ozone production, ambient formaldehyde (HCHO) is one of the key oxygenated volatile organic compounds (OVOCs). We present the variations on formaldehyde column densities in summertime in Beijing retrieved from ozone monitoring instrument (OMI) between 2005 and 2011. Satellite columns of HCHO correlated well with available ground-based measurements despite some noticeable differences. The orthogonal distance regression (ODR) method was used to estimate the ratio between satellite columns and ground-level concentrations, whereas ordinary least squares (OLS) method was used to fit the trend of ambient formaldehyde. The formaldehyde concentrations derived from HCHO columns were in the range of 7-12 ppbv and steadily increased at an approximate rate of 0.64 ppbv/yr (7.8% at 2005 level) with an uncertainty of 51%. VOC reactivity quantified by means of OH loss rates showed increasing contribution from formaldehyde and acetaldehyde, rising from 35% in 2005 to 40% in 2010, and decreasing contribution from anthropogenic VOCs, dropping from 49% in 2005 to 40% in 2010. More attention should be paid to understanding the net feedback of increasing formaldehyde to ozone formation potential. (C) 2012 Min Shao. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000307680700018&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Multidisciplinary; SCI(E); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 3; 9; 1059-1062; 23
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/158365]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Zhang, Qian,Shao, Min,Li, Yang,et al. Increase of ambient formaldehyde in Beijing and its implication for VOC reactivity[J]. 中国化学快报英文版,2012.
APA	Zhang, Qian,Shao, Min,Li, Yang,Lu, Si Hua,Yuan, Bin,&Chen, Wen Tai.(2012).Increase of ambient formaldehyde in Beijing and its implication for VOC reactivity.中国化学快报英文版.
MLA	Zhang, Qian,et al."Increase of ambient formaldehyde in Beijing and its implication for VOC reactivity".中国化学快报英文版 (2012).