Development of an incoherent broad-band cavity-enhanced aerosol extinction spectrometer and its application to measurement of aerosol optical hygroscopicity

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dc.contributor.authorZhao, Weixiong
dc.contributor.authorXu, Xuezhe
dc.contributor.authorFang, Bo
dc.contributor.authorZhang, Qilei
dc.contributor.authorQian, Xiaodong
dc.contributor.authorWang, Shuo
dc.contributor.authorLiu, Pan
dc.contributor.authorZhang, Weijun
dc.contributor.authorWang, Zhenzhu
dc.contributor.authorLiu, Dong
dc.contributor.authorHuang, Yinbo
dc.contributor.authorVenables, Dean S.
dc.contributor.authorChen, Weidong
dc.contributor.funderNational Natural Science Foundation of Chinaen
dc.contributor.funderNatural Science Foundation of Anhui Provinceen
dc.contributor.funderYouth Innovation Promotion Association of the Chinese Academy of Sciencesen
dc.date.accessioned2018-06-13T08:52:53Z
dc.date.available2018-06-13T08:52:53Z
dc.date.issued2017-02-02
dc.date.updated2018-06-11T09:00:27Z
dc.description.abstractWe report on the development of a blue light-emitting-diode-based incoherent broad-band cavity-enhanced absorption spectroscopy (IBBCEAS) instrument for the measurement of the aerosol extinction coefficient at 𝜆=461  nm. With an effective absorption path length of 2.8 km, an optimum detection limit of 0.05  Mm−1 (5×10−10  cm−1) was achieved with an averaging time of 84 s. The baseline drift of the developed spectrometer was about ±0.3  Mm−1 over 2.5 h (1𝜎 standard deviation). The performance of the system was evaluated with laboratory-generated monodispersed polystyrene latex (PSL) spheres. The retrieved complex refractive index of PSL agreed well with previously reported values. The relative humidity (RH) dependence of the aerosol extinction coefficient was measured using IBBCEAS. The measured extinction enhancement factor values for 200 nm dry ammonium sulphate particles at different RH were in good agreement with the modeled values. Field performance of the aerosol extinction spectrometer was demonstrated at the Hefei Radiation Observatory site.en
dc.description.sponsorshipChina Special Fund for Meteorological Research in the Public Interest (GYHY201406039); National Natural Science Foundation of China (NSFC) (41330424); Natural Science Foundation of Anhui Province (1508085J03); Youth Innovation Promotion Association of the Chinese Academy of Sciences (2016383)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationZhao, W., Xu, X., Fang, B., Zhang, Q., Qian, X., Wang, S., Liu, P., Zhang, W., Wang, Z., Liu, D., Huang, Y., Venables, D. S. and Chen, W. (2017) 'Development of an incoherent broad-band cavity-enhanced aerosol extinction spectrometer and its application to measurement of aerosol optical hygroscopicity', Journal of Applied Optics, 56(11), pp. E16-E22. doi:10.1364/AO.56.000E16en
dc.identifier.doi10.1364/AO.56.000E16
dc.identifier.endpage22en
dc.identifier.issn1559-128X
dc.identifier.issn2155-3165
dc.identifier.issued11en
dc.identifier.journaltitleJournal of Applied Opticsen
dc.identifier.startpage16en
dc.identifier.urihttps://hdl.handle.net/10468/6286
dc.identifier.volume56en
dc.language.isoenen
dc.publisherOptical Society of Americaen
dc.rights© 2017, Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.en
dc.subjectAerosol detectionen
dc.subjectAir pollution monitoringen
dc.subjectSpectrometers and spectroscopic instrumentationen
dc.titleDevelopment of an incoherent broad-band cavity-enhanced aerosol extinction spectrometer and its application to measurement of aerosol optical hygroscopicityen
dc.typeArticle (peer-reviewed)en
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