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Carbonyl emissions from vehicular exhausts sources in Hong Kong
Ho, SSH (Ho, Steven Sai Hang)[1,2,3]; Ho, KF (Ho, Kin Fai)[2,4]; Lee, SC (Lee, Shun Cheng)[4]; Cheng, Y (Cheng, Yan)[2,4]; Yu,JZ (Yu, Jian Zhen)[5]; Lam, KM (Lam, Ka Man)[5]; Feng, NSY (Feng, Natale Sin Yau)[1]; Huang, Y (Huang, Yu)[4]
2012-02-28
Source PublicationJOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION
Volume62Issue:2Pages:221-234
Subtype期刊论文
Abstract

Vehicular emission (VE) is one of the important anthropogenic sources for airborne carbonyls in urban area. Six types of VE-dominated samples were collected at representative locations in Hong Kong where polluted by a particular fueled type of vehicles, including (i) a gas refilling taxis station (liquefied petroleum gas [LPG] emission); (ii) a light-duty passenger car park (gasoline emission); (iii) a minibus station (diesel emission); (iv) a single-deck-bus depot (diesel emission); (v) a double-deck-bus depot (diesel emission); and (vi) a whole-food market entrance for light- and heavy-duty vehicles (diesel emission). A total of 15 carbonyls in the samples were quantified. Formaldehyde was the most abundant carbonyl among the VE-dominated samples, and its contribution to the total quantified amount on a molar basis ranged from 54.8% to 60.8%. Acetaldehyde and acetone were the next two abundant carbonyls. The carbonyls were quantified at three roadside locations in Hong Kong. The highest concentrations of formaldehyde and acetaldehyde, 22.7 +/- 8.4 and 6.0 +/- 2.8 mu g/m(3), respectively, were determined in the samples collected at a main transportation gate for goods between Hong Kong and Mainland China. The total quantified carbonyl concentration, 37.9 +/- 9.3 mu g/m(3), was the highest at an entrance of a cross-harbor tunnel in downtown area. The theoretical carbonyls compositions of the three roadside locations were estimated according to the VE-dominated sample profiles and the statistics on vehicle numbers and types during the sampling period. The measured compositions of formaldehyde were much higher than the theoretical compositions in summer, demonstrating that photochemical reactions significantly contributed to the formaldehyde production in the roadsides.

DOI10.1080/10473289.2011.642952
Indexed BySCIE ; EI
Language英语
Citation statistics
Cited Times:21[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10092
Collection粉尘与环境研究室
Corresponding AuthorHo, SSH (Ho, Steven Sai Hang)[1,2,3]
Affiliation1.SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China;
2.Division of Atmospheric Sciences, Desert Research Institute, Reno, NV, USA;
3.Department of Civil and Structural Engineering, Research Center for EnvironmentalTechnology and Management, The Hong Kong Polytechnic University, Hung Hom, Kowloon,Hong Kong SAR, China;
4.Department of Chemistry, Hong Kong University of Science and Technology, Clear WaterBay, Kowloon, Hong Kong SAR, China;
5.Hong Kong Premium Services and Research Laboratory, Hung Hom, Kowloon, Hong KongSAR, China
Recommended Citation
GB/T 7714
Ho, SSH ,Ho, KF ,Lee, SC ,et al. Carbonyl emissions from vehicular exhausts sources in Hong Kong[J]. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION,2012,62(2):221-234.
APA Ho, SSH .,Ho, KF .,Lee, SC .,Cheng, Y .,Yu,JZ .,...&Huang, Y .(2012).Carbonyl emissions from vehicular exhausts sources in Hong Kong.JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION,62(2),221-234.
MLA Ho, SSH ,et al."Carbonyl emissions from vehicular exhausts sources in Hong Kong".JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION 62.2(2012):221-234.
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