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dc.contributor.authorRavindra, K.
dc.contributor.authorWauters, E.
dc.contributor.authorTyagi, S.K.
dc.contributor.authorMor, S.
dc.contributor.authorVan Grieken, R.
dc.date.accessioned2008-05-20T08:38:25Z
dc.date.available2008-05-20T08:38:25Z
dc.date.issued2006
dc.identifier.citationRavindra , K , Wauters , E , Tyagi , S K , Mor , S & Van Grieken , R 2006 , ' Assessment of Air Quality After the Implementation of Compressed Natural Gas (CNG) as Fuel in Public Transport in Delhi, India ' , Environmental Monitoring and Assessment , vol. 115 , no. 1-3 , pp. 405-417 . https://doi.org/10.1007/s10661-006-7051-5
dc.identifier.issn0167-6369
dc.identifier.otherPURE: 179246
dc.identifier.otherPURE UUID: 6606c7ba-520b-4591-ac48-c11ff13f758a
dc.identifier.otherdspace: 2299/2029
dc.identifier.otherScopus: 29344454414
dc.identifier.urihttp://hdl.handle.net/2299/2029
dc.descriptionThe original publication is available at www.springerlink.com . Copyright Springer DOI : 10.1007/s10661-006-7051-5
dc.description.abstractPublic transport in Delhi was amended by the Supreme Court of India to use Compressed Natural Gas (CNG) instead of diesel or petrol. After the implementation of CNG since April 2001, Delhi has the highest fraction of CNG-run public vehicles in the world and most of them were introduced within 20 months. In the present study, the concentrations of various criteria air pollutants (SPM, PM10, CO, SO2 and NOx) and organic pollutants such as benzene, toluene, xylene (BTX) and polycyclic aromatic hydrocarbons (PAHs) were assessed before and after the implementation of CNG. A decreasing trend was found for PAHs, SO2 and CO concentrations, while the NOx level was increased in comparison to those before the implementation of CNG. Further, SPM, PM10, and BTX concentrations showed no significant change after the implementation of CNG. However, the BTX concentration demonstrated a clear relation with the benzene content of gasoline. In addition to the impact of the introduction of CNG the daily variation in PAHs levels was also studied and the PAHs concentrations were observed to be relatively high between 10 pm to 6 am, which gives a proof of a relation with the limited day entry and movement of heavy vehicles in Delhi.en
dc.language.isoeng
dc.relation.ispartofEnvironmental Monitoring and Assessment
dc.rights/dk/atira/pure/core/openaccesspermission/open
dc.titleAssessment of Air Quality After the Implementation of Compressed Natural Gas (CNG) as Fuel in Public Transport in Delhi, Indiaen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
rioxxterms.versionofrecordhttps://doi.org/10.1007/s10661-006-7051-5
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstyperestrictedAccess


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