Article: Intake fraction of nonreactive motor vehicle exhaust in Hong Kong

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TitleIntake fraction of nonreactive motor vehicle exhaust in Hong Kong
AuthorsLuo, Z1
Li, Y1
Nazaroff, WW2
KeywordsCarbon monoxide
Exposure
Intake fraction
Regional pollutant transport
Vehicle emission
Issue Date2010
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/atmosenv
CitationAtmospheric Environment, 2010, v. 44 n. 15, p. 1913-1918 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.atmosenv.2010.02.016
AbstractThe intake fraction (iF) of nonreactive constituents of exhaust from mobile vehicles in the urban area of Hong Kong is investigated using available monitoring data for carbon monoxide (CO) as a tracer of opportunity. Correcting for regional transport of carbon monoxide into Hong Kong, the annual-average iF for nonreactive motor vehicle emissions within the city is estimated to be around 270 per million. This estimated iF is much higher than values previously reported for vehicle emissions in US urban areas, Helsinki and Beijing, and somewhat lower than those reported for a densely populated street canyon in downtown Manhattan, New York City, or for emissions into indoor environments. The reported differences in intake fractions in various cities mainly result from the differences in local population densities. Our analysis highlights the importance of accounting for the influence of upwind transport of pollutants when using ambient data to estimate iF for an urban area. For vehicle exhaust in Hong Kong, it is found that the in/near vehicle microenvironment contributes similarly to the indoor home environment when accounting for the overall iF for children and adults. © 2010 Elsevier Ltd.
ISSN1352-2310
2011 Impact Factor: 3.465
2011 SCImago Journal Rankings: 0.167
DOIhttp://dx.doi.org/10.1016/j.atmosenv.2010.02.016
ISI Accession Number IDWOS:000277539700010
Funding AgencyGrant Number
Research Grants Council of Hong Kong Special Administrative Region, ChinaHKU 7145/07E
CIBSE HK Branch
Funding Information:

The work described was supported by the Research Grants Council of Hong Kong Special Administrative Region, China (Project No. HKU 7145/07E) and a CIBSE HK Branch grant. We thank Hong Kong Environmental Protection Department and Hong Kong Observatory for provision of the air pollution and weather data sets. We also thank an anonymous reviewer for his/her valuable comments and suggestions to improve the paper.

ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorLuo, Z
dc.contributor.authorLi, Y
dc.contributor.authorNazaroff, WW
dc.date.accessioned2010-10-31T10:57:49Z
dc.date.available2010-10-31T10:57:49Z
dc.date.issued2010
dc.description.abstractThe intake fraction (iF) of nonreactive constituents of exhaust from mobile vehicles in the urban area of Hong Kong is investigated using available monitoring data for carbon monoxide (CO) as a tracer of opportunity. Correcting for regional transport of carbon monoxide into Hong Kong, the annual-average iF for nonreactive motor vehicle emissions within the city is estimated to be around 270 per million. This estimated iF is much higher than values previously reported for vehicle emissions in US urban areas, Helsinki and Beijing, and somewhat lower than those reported for a densely populated street canyon in downtown Manhattan, New York City, or for emissions into indoor environments. The reported differences in intake fractions in various cities mainly result from the differences in local population densities. Our analysis highlights the importance of accounting for the influence of upwind transport of pollutants when using ambient data to estimate iF for an urban area. For vehicle exhaust in Hong Kong, it is found that the in/near vehicle microenvironment contributes similarly to the indoor home environment when accounting for the overall iF for children and adults. © 2010 Elsevier Ltd.
dc.description.natureLink_to_subscribed_fulltext
dc.identifier.citationAtmospheric Environment, 2010, v. 44 n. 15, p. 1913-1918 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.atmosenv.2010.02.016
dc.identifier.citeulike6709568
dc.identifier.doihttp://dx.doi.org/10.1016/j.atmosenv.2010.02.016
dc.identifier.epage1918
dc.identifier.hkuros180422
dc.identifier.isiWOS:000277539700010
Funding AgencyGrant Number
Research Grants Council of Hong Kong Special Administrative Region, ChinaHKU 7145/07E
CIBSE HK Branch
Funding Information:

The work described was supported by the Research Grants Council of Hong Kong Special Administrative Region, China (Project No. HKU 7145/07E) and a CIBSE HK Branch grant. We thank Hong Kong Environmental Protection Department and Hong Kong Observatory for provision of the air pollution and weather data sets. We also thank an anonymous reviewer for his/her valuable comments and suggestions to improve the paper.

dc.identifier.issn1352-2310
2011 Impact Factor: 3.465
2011 SCImago Journal Rankings: 0.167
dc.identifier.issue15
dc.identifier.openurl
dc.identifier.scopuseid_2-s2.0-77950948405
dc.identifier.spage1913
dc.identifier.urihttp://hdl.handle.net/10722/124853
dc.identifier.volume44
dc.languageeng
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/atmosenv
dc.publisher.placeUnited Kingdom
dc.relation.ispartofAtmospheric Environment
dc.relation.referencesReferences in Scopus
dc.subjectCarbon monoxide
dc.subjectExposure
dc.subjectIntake fraction
dc.subjectRegional pollutant transport
dc.subjectVehicle emission
dc.titleIntake fraction of nonreactive motor vehicle exhaust in Hong Kong
dc.typeArticle
Author Affiliations
  1. The University of Hong Kong
  2. UC Berkeley