Open path incoherent broadband cavity-enhanced measurements of NO3 radical and aerosol extinction in the North China Plain

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dc.contributor.author Suhail, K.
dc.contributor.author George, M.
dc.contributor.author Chandran, Satheesh
dc.contributor.author Varma, R.
dc.contributor.author Venables, Dean S.
dc.contributor.author Wang, M.
dc.contributor.author Chen, J.
dc.date.accessioned 2019-10-01T05:11:13Z
dc.date.available 2019-10-01T05:11:13Z
dc.date.issued 2018-09-15
dc.identifier.citation Suhail, K., George, M., Chandran, S., Varma, R., Venables, D.S., Wang, M. and Chen, J., 2019. Open path incoherent broadband cavity-enhanced measurements of NO3 radical and aerosol extinction in the North China Plain. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 208, (8pp). en
dc.identifier.volume 208 en
dc.identifier.startpage 24 en
dc.identifier.endpage 31 en
dc.identifier.issn 1386-1425
dc.identifier.uri http://hdl.handle.net/10468/8644
dc.identifier.doi 10.1016/j.saa.2018.09.023 en
dc.description.abstract We describe the observation of the NO3 radical using an incoherent broadband cavity-enhanced absorption spectrometer in an open-path configuration (OP-IBBCEAS) in a polluted summer environment in continental China. The instrument was installed 17 m above the ground at the top of a residential complex near the CAREBeijing–NCP 2014 site in Wangdu, Hebei province, about 200 km southwest of Beijing over the period 28 to 30 June 2014. The separation between the transmitter and receiver components of the instrument was 335 cm and the effective pathlength in clean reference air was ~3.4 km. NO3 was detected above the detection limit on all three nights when the instrument was operational. The maximum mixing ratio measured was ~175 pptv with a detection sensitivity of ~36 pptv for measurements with an average acquisition time of 10 min. While most extractive instruments try to avoid interferences arising from aerosol extinction, the open path configuration has advantages owing to its ability to detect trace gases even in the presence of aerosol loading. Moreover, concurrent retrieval of aerosol optical extinction is possible from analysis of the absorption magnitude of the oxygen B-band at 687 nm. The experimental setup, its calibration, data acquisition, and analysis procedure are discussed, and the results presented here demonstrate the sensitivity and specificity that can be achieved at high spatial and temporal resolution using the novel configuration of IBBCEAS in the open path. en
dc.description.sponsorship SERC (LOP/0008/2010); P2/3331/2009; 91544225 en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Elsevier B.V. en
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S1386142518308692
dc.rights © 2018 The Authors. Published by Elsevier B.V en
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/ en
dc.subject Open path en
dc.subject Incoherent broadband cavity enhanced absorption spectroscopy en
dc.subject Nitrate radical en
dc.subject Aerosol extinction en
dc.title Open path incoherent broadband cavity-enhanced measurements of NO3 radical and aerosol extinction in the North China Plain en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Dean Venables, School of Chemistry, University College Cork, Cork, Ireland. +353-21-490-3000 Email: d.venables@ucc.ie en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.contributor.funder Science Foundation Ireland en
dc.contributor.funder Department of Science and Technology, India en
dc.contributor.funder National Natural Science Foundation of China en
dc.contributor.funder Ministry of Human Resources Development, India en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy en
dc.internal.IRISemailaddress d.venables@ucc.ie en
dc.internal.IRISemailaddress satheesh.chandran@ucc.ie en
dc.relation.project info:eu-repo/grantAgreement/SFI/SFI International Strategic Cooperation Award (ISCA)/13/ISCA/2844/IE/Ireland-India ISCA Programme/ en
dc.identifier.eissn 1873-3557


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© 2018 The Authors. Published by Elsevier B.V Except where otherwise noted, this item's license is described as © 2018 The Authors. Published by Elsevier B.V
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