High sensitivity in situ monitoring of NO3 in an atmospheric simulation chamber using incoherent broadband cavity-enhanced absorption spectroscopy

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dc.contributor.authorVenables, Dean S.
dc.contributor.authorGherman, Titus
dc.contributor.authorOrphal, Johannes
dc.contributor.authorWenger, John C.
dc.contributor.authorRuth, Albert A.
dc.contributor.funderIrish Research Council for Science Engineering and Technologyen
dc.contributor.funderEuropean Commissionen
dc.date.accessioned2012-11-21T16:54:00Z
dc.date.available2012-11-21T16:54:00Z
dc.date.issued2006-11
dc.date.updated2012-10-23T15:11:58Z
dc.description.abstractWe describe the application of incoherent broadband cavity-enhanced absorption spectroscopy (IBBCEAS) for the in situ detection of atmospheric trace gases and radicals (NO3, NO2, O-3, H2O) in an atmospheric simulation chamber under realistic atmospheric conditions. The length of the optical cavity across the reaction chamber is 4.5 m, which is significantly longer than in previous studies that use high finesse optical cavities to achieve high absorption sensitivity. Using a straightforward spectrometer configuration, we show that detection limits corresponding to typical atmospheric concentrations can be achieved with a measurement time of seconds to a few minutes. In particular, with only moderate reflectivity mirrors, we report a measured sensitivity of 4 pptv to NO3 in a 1 min acquisition time. The high spatial and temporal resolution of the IBBCEAS method and its pptv sensitivity to NO3 makes it useful in laboratory studies of atmospheric processes as well as having obvious potential for field measurements.We describe the application of incoherent broadband cavity-enhanced absorption spectroscopy (IBBCEAS) for the in situ detection of atmospheric trace gases and radicals (NO3, NO2, O-3, H2O) in an atmospheric simulation chamber under realistic atmospheric conditions. The length of the optical cavity across the reaction chamber is 4.5 m, which is significantly longer than in previous studies that use high finesse optical cavities to achieve high absorption sensitivity. Using a straightforward spectrometer configuration, we show that detection limits corresponding to typical atmospheric concentrations can be achieved with a measurement time of seconds to a few minutes. In particular, with only moderate reflectivity mirrors, we report a measured sensitivity of 4 pptv to NO3 in a 1 min acquisition time. The high spatial and temporal resolution of the IBBCEAS method and its pptv sensitivity to NO3 makes it useful in laboratory studies of atmospheric processes as well as having obvious potential for field measurements.en
dc.description.sponsorshipIrish Research Council for Science Engineering and Technology (SC/2002/160); European Commission (MTKD-CT-2004-014406)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationVenables, D. S.,Gherman, T.,Orphal, J.,Wenger, J. C.,Ruth*, A. A.; (2006) 'High sensitivity in situ monitoring of NO3 in an atmospheric simulation chamber using incoherent broadband cavity-enhanced absorption spectroscopy'. Environmental Science & Technology, 40 (21):6758-6763. doi: 10.1021/es061076jen
dc.identifier.doi10.1021/es061076j
dc.identifier.endpage6763en
dc.identifier.issn0013-936X
dc.identifier.issued21en
dc.identifier.journaltitleEnvironmental Science & Technologyen
dc.identifier.startpage6758en
dc.identifier.urihttps://hdl.handle.net/10468/795
dc.identifier.volume40en
dc.language.isoenen
dc.publisherAmerican Chemical Societyen
dc.relation.urihttp://pubs.acs.org/doi/abs/10.1021/es061076j
dc.rightsCopyright © 2006 American Chemical Society. This 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 http://pubs.acs.org/doi/abs/10.1021/es061076jen
dc.subjectAir pollution and industrial hygieneen
dc.subjectBroadband cavity enhanced absorption spectroscopyen
dc.subjectIBBCEASen
dc.subject.lcshAtmospheric chemistryen
dc.titleHigh sensitivity in situ monitoring of NO3 in an atmospheric simulation chamber using incoherent broadband cavity-enhanced absorption spectroscopyen
dc.typeArticle (peer-reviewed)en
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