Cavity-enhanced absorption using an atomic line source: application to deep-UV measurements

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dc.contributor.author Darby, Steven B.
dc.contributor.author Smith, Paul D.
dc.contributor.author Venables, Dean S.
dc.date.accessioned 2012-11-20T11:46:38Z
dc.date.available 2012-11-20T11:46:38Z
dc.date.issued 2012-03
dc.identifier.citation DARBY, S. B., SMITH, P. D. & VENABLES, D. S. 2012. Cavity-enhanced absorption using an atomic line source: application to deep-UV measurements. Analyst, 137, 2318-2321. doi: 10.1039/c2an35149h en
dc.identifier.volume 137 en
dc.identifier.startpage 2318 en
dc.identifier.endpage 2321 en
dc.identifier.issn 0003-2654
dc.identifier.issn 1364-5528
dc.identifier.uri http://hdl.handle.net/10468/786
dc.identifier.doi 10.1039/c2an35149h
dc.description.abstract Optical cavities are commonly used to increase the sensitivity of absorption measurements, but have not been extensively used below 300 nm, mainly owing to the limited light sources at these wavelengths. While some progress has been made using cavity ring-down spectroscopy, these systems rely on complex and expensive lasers. Here we investigate an approach combining Cavity-Enhanced Absorption Spectroscopy (CEAS) with an inexpensive low vapour pressure mercury lamp for sensitive absorption measurements at 253.7 nm. We demonstrate that the CEAS absorption in our system is 50 times greater than the absorption found in a single-pass configuration; using this approach, we obtained limits of detection of 8.1 pptv (66 ng m(-3)) for gaseous elemental mercury and 8.4 ppbv for ozone. We evaluate the performance of the system and discuss potential improvements and applications of this approach. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Royal Society of Chemistry en
dc.rights © The Royal Society of Chemistry 2012. en
dc.subject Ring-down spectroscopy en
dc.subject Laser en
dc.subject Ultraviolet en
dc.subject Mercury en
dc.subject Spectra en
dc.subject Liquids en
dc.subject Phase en
dc.subject N2O5 en
dc.subject NO3 en
dc.title Cavity-enhanced absorption using an atomic line source: application to deep-UV measurements en
dc.type Article (peer-reviewed) en
dc.internal.authorurl http://research.ucc.ie/profiles/D004/dvenables en
dc.internal.authorcontactother Dean Venables, Chemistry, University College Cork, Cork, Ireland. +353-21-490-3000 Email: d.venables@ucc.ie en
dc.internal.availability Full text available en
dc.date.updated 2012-10-23T15:09:23Z
dc.description.version Accepted Version en
dc.internal.rssid 146554526
dc.internal.wokid 000303126000007
dc.description.status Peer reviewed en
dc.identifier.journaltitle Analyst en
dc.internal.copyrightchecked Yes en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress d.venables@ucc.ie en


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