論文

査読有り
2010年8月

Measurements of aerosol optical properties in central Tokyo during summertime using cavity ring-down spectroscopy: Comparison with conventional techniques

ATMOSPHERIC ENVIRONMENT
  • Tomoki Nakayama
  • Rie Hagino
  • Yutaka Matsumi
  • Yosuke Sakamoto
  • Masahiro Kawasaki
  • Akihiro Yamazaki
  • Akihiro Uchiyama
  • Rei Kudo
  • Nobuhiro Moteki
  • Yutaka Kondo
  • Kenichi Tonokura
  • 全て表示

44
25
開始ページ
3034
終了ページ
3042
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.atmosenv.2010.05.008
出版者・発行元
PERGAMON-ELSEVIER SCIENCE LTD

A highly sensitive cavity ring-down spectrometer (CRDS) was used to monitor the aerosol extinction coefficient at 532 nm. The performance of the spectrometer was evaluated using measurements of nearly monodisperse polystyrene particles with diameters between 150 and 500 nm. By comparing the observed results with those determined using Mie theory, the accuracy of the CRDS instrument was determined to be >97%, while the upper limit for the precision of the instrument was estimated to be 0.6-3.5% (typically 2%), depending on the particle number concentration, which was in the range of 30-2300 particles cm(-3). Simultaneous measurements of the extinction (b(ext)), scattering (b(sca)) and absorption (b(abs)) coefficients of ambient aerosols were performed in central Tokyo from 14 August to 2 September 2007 using the CRDS instrument, two nephelometers and a particle/soot absorption photometer (PSAP), respectively. The value of bext measured using the CRDS instrument was compared with the sum of the b(sca) and b(obs) values measured with a nephelometer and a PSAP, respectively. Good agreement between the b(ext) and b(sca) + b(abs) values was obtained except for data on days when high ozone mixing ratios (>130 ppbv) were observed. During the high-O-3 days, the values for b(sca) + b(abs) were similar to 7% larger than the value for b(ext), possibly because the value for b(abs) measured by the PSAP was overestimated due to interference from coexisting non-absorbing aerosols such as secondary organic aerosols. (C) 2010 Elsevier Ltd. All rights reserved.

リンク情報
DOI
https://doi.org/10.1016/j.atmosenv.2010.05.008
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000280616100011&DestApp=WOS_CPL
URL
http://www.scopus.com/inward/record.url?eid=2-s2.0-77954312881&partnerID=MN8TOARS
URL
http://orcid.org/0000-0002-9863-4241
ID情報
  • DOI : 10.1016/j.atmosenv.2010.05.008
  • ISSN : 1352-2310
  • eISSN : 1873-2844
  • ORCIDのPut Code : 34079372
  • SCOPUS ID : 77954312881
  • Web of Science ID : WOS:000280616100011

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