沖縄辺戸岬における大気中のアンモニア/アンモニウム濃度の変動と分配  [in Japanese] Variation and Distribution of Ammonia/Ammonium Concentration at the Cape Hedo, Okinawa in the Ambient Air  [in Japanese]

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Author(s)

    • 高見 昭憲 TAKAMI Akinori
    • 国立環境研究所 アジア自然共生研究グループ Asian Environment Research Group, National Institute for Environmental Studies
    • 長田 和雄 OSADA Kazuo
    • 名古屋大学大学院 環境学研究科 地球環境科学専攻 Department of Earth and Environmental Sciences, Graduate School of Environmental Studies, Nagoya University
    • 定永 靖宗 [他] SADANAGA Yasuhiro
    • 大阪府立大学大学院 工学研究科 物質・化学系専攻応用化学分野 Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University
    • 坂東 博 BANDOW Hiroshi
    • 大阪府立大学大学院 工学研究科 物質・化学系専攻応用化学分野 Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University

Abstract

Ammonia (NH<sub>3</sub>) in ambient air was measured at Cape Hedo, Okinawa, in spring 2008 using a photo-acoustic spectroscopy method (TGA310, Omnisens). Average concentration and standard deviation (1σ) of NH<sub>3</sub> was 0.56±0.50 ppbv. It is considered that the variation in NH<sub>3</sub> concentration does not come from the long range transport. The concentration and standard deviation (1σ) of ammonium ion (NH<sub>4</sub><sup>+</sup>) measured using an aerosol mass spectrometer (Q-AMS, Aerodyne) was 2.2±1.4 µgm<sup>-3</sup> and NH<sub>4</sub><sup>+</sup> was more than 80% for NH<sub>3</sub>+NH<sub>4</sub><sup>+</sup> when NH<sub>4</sub><sup>+</sup> was transported over long-range associated with sulfate (SO<sub>4</sub><sup>2-</sup>). NH<sub>4</sub><sup>+</sup> was deficient when SO<sub>4</sub><sup>2-</sup>/(SO<sub>2</sub>+SO<sub>4</sub><sup>2-</sup>) was large in air masses.<br>

Journal

  • Earozoru Kenkyu

    Earozoru Kenkyu 26(1), 42-46, 2011

    Japan Association of Aerosol Science and Technology

Cited by:  2

Codes

  • NII Article ID (NAID)
    130000655180
  • NII NACSIS-CAT ID (NCID)
    AN10041511
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    0912-2834
  • NDL Article ID
    11043813
  • NDL Source Classification
    ZP5(科学技術--化学・化学工業--化学工学)
  • NDL Call No.
    Z17-1062
  • Data Source
    CJPref  NDL  J-STAGE 
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