Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/79242
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dc.contributorDepartment of Civil and Environmental Engineeringen_US
dc.creatorZeng, LWen_US
dc.creatorLyu, XPen_US
dc.creatorGuo, Hen_US
dc.creatorZou, SCen_US
dc.creatorLing, ZHen_US
dc.date.accessioned2018-11-05T01:45:07Z-
dc.date.available2018-11-05T01:45:07Z-
dc.identifier.issn0013-936Xen_US
dc.identifier.urihttp://hdl.handle.net/10397/79242-
dc.language.isoenen_US
dc.publisherAmerican Chemical Societyen_US
dc.rights© 2018 American Chemical Societyen_US
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in Environmental Science & Technology, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.est.8b00256.en_US
dc.titlePhotochemical Formation of C-1-C-5 Alkyl Nitrates in Suburban Hong Kong and over the South China Seaen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage5581en_US
dc.identifier.epage5589en_US
dc.identifier.volume52en_US
dc.identifier.issue10en_US
dc.identifier.doi10.1021/acs.est.8b00256en_US
dcterms.abstractAlkyl nitrates (RONO2) are important reservoirs of atmospheric nitrogen, regulating nitrogen cycling and ozone (O-3) formation. In this study, we found that propane and n-butane were significantly lower at the offshore site (WSI) in Hong Kong (p < 0.05), whereas C-3-C-4 RONO2 were comparable to the suburban site (TC) (p > 0.05). Stronger oxidative capacity at WSI led to more efficient RONO2 formation. Relative incremental reactivity (RIR) was for the first time used to evaluate RONO2 precursor relationships. In contrast to a consistently volatile organic compounds (VOC)limited regime at TC, RONO2 formation at WSI switched from VOC-limited regime during episodes to VOC and nitrogen oxides (NOx) colimited regime during nonepisodes. Furthermore, unlike the predominant contributions of parent hydrocarbons to C-4-C-5 RONO2, the production of C-1-C-3 RONO2 was more sensitive to other VOCs like aromatics and carbonyls, which accounted for similar to 40-90% of the productions of C, C-3 alkylperoxy (RO2) and alkoxy radicals (RO) at both sites. This resulted from the decomposition of larger RO2/RO and the change of OH abundance under the photochemistry of other VOCs. This study advanced our understanding of the photochemical formation of RONO2, particularly the relationships between RONO2 and their precursors, which were not confined to the parent hydrocarbons.en_US
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationEnvironmental science & technology, 15 May 2018, v. 52, no. 10, p. 5581-5589en_US
dcterms.isPartOfEnvironmental science & technologyen_US
dcterms.issued2018-05-15-
dc.identifier.isiWOS:000432417400008-
dc.identifier.scopus2-s2.0-85046401901-
dc.identifier.pmid29664616-
dc.identifier.eissn1520-5851en_US
dc.identifier.rosgroupid2017001523-
dc.description.ros2017-2018 > Academic research: refereed > Publication in refereed journalen_US
dc.description.validate201810 bcrcen_US
dc.description.oaAccepted Manuscripten_US
dc.identifier.FolderNumberRGC-B1-100en_US
dc.description.fundingSourceRGCen_US
dc.description.fundingSourceOthersen_US
dc.description.fundingTextNational Key R&D Program of China; The Hong Kong Polytechnic University; Research Institute for Sustainable Urban Development of The Hong Kong Polytechnic Universityen_US
dc.description.pubStatusPublisheden_US
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