Measurements of nitrous acid concentration in the atmosphere using chemical ionization mass spectrometry

• Project/Area Number: 20310001
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Hokkaido University
• Principal Investigator: HIROKAWA Jun Hokkaido University, 大学院・地球環境科学研究院, 准教授 (20262115)
• Co-Investigator(Kenkyū-buntansha): MAFUNE Fumitaka 東京大学, 大学院・総合文化研究科, 准教授 (50262142)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000); Fiscal Year 2010: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2009: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2008: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
• Keywords: 大気質 / 光化学オキシダント / 亜硝酸 / 大気計測 / 質量分析法 / 化学イオン化 / イオン-分子反応 / 量子化学計算 / 対流圏オゾン

Research Abstract

Chemical ionization mass spectrometry was applied to the measurement of nitrous acid in the atmosphere. By optimizing reaction conditions for the chemical ionization and increasing the signal intensity of the primary ion, the limit of detection of 40 pptv can be obtained for an integration time of 1 minute. Possibility of the interferences from other atmospheric species was investigated by laboratory experiments and ab initio calculations. The interference from nitrogen dioxide in humid air was experimentally quantified. Preliminary measurements of nitrous acid were carried out in Sapporo city.

Research Products

• [Journal Article] Solvation structure of I^- and Na^+ on the surface of NaI aqueous solution studied by photo-detachment spectroscopy in combination with mass spectrometry (2011)
  • Author(s): M.Shoji, K.Kaniwa, Y.Hiranuma, O.Maselli, F. Mafune
  • Journal Title: J.Phys.Chem.A 115巻 Pages: 2148-2154
  • Peer Reviewed
• [Journal Article] A balloon sounding technique for measuring SO_2 plumes (2010)
  • Author(s): G.A.Morris, et al.
  • Journal Title: J.Atmos.Oceanic Technol. Volume: 27 Pages: 1318-1330
  • Peer Reviewed
• [Journal Article] In situ measurements of atmospheric nitrous acid by chemical ionization mass spectrometry using chloride ion transfer reactions (2009)
  • Author(s): J.Hirokawa, T.Kato, F.Mafune
  • Journal Title: Anal.Chem. 81巻 Pages: 8380-8386
  • Peer Reviewed
• [Journal Article] In situ measurements of atmospheric nitrous acid by chemical ionization mass spectrometry using chloride ion transfer reactions (2009)
  • Author(s): J.Hirokawa, T.Kato, F.Mafune
  • Journal Title: Analytical Chemistry 81 Pages: 8380-8386
  • Peer Reviewed
• [Journal Article] Uptake of gas-phase nitrous acid by pH-controlled aqueous solution studied by a wetted wall flow tube (2008)
  • Author(s): J.Hirokawa, T.Kato, F. Mafun
  • Journal Title: J.Phys.Chem.A 112巻 Pages: 12143-12150
  • Peer Reviewed
• [Journal Article] Uptake of gas-phase nitrous acid by pH-controlled aqueous solution studied by a wetted wall flow tube (2008)
  • Author(s): J. Hirokawa, T. Kato, and F. Mafune
  • Journal Title: The Journal of Physical Chemistry A 112 Pages: 12143-12150
  • Peer Reviewed
• [Presentation] 液体ビーム法を用いた電解質水溶液表面におけるイオンの存在状態と異種イオンの効果の解明 (2010)
  • Author(s): 平沼洋次郎,鹿庭圭将,東海林真,宮島謙,真船文隆
  • Organizer: 第4回分子科学討論会
  • Place of Presentation: 大阪
  • Year and Date: 2010-09-14
• [Presentation] Solvation Structure of Ions on the Surface of Sodium Halide Solution studied by using Liquid Beam Technique (2010)
  • Author(s): Y.Hiranuma, K.Kaniwa, K.Miyajima, F.Mafune
  • Organizer: 第26回化学反応討論会
  • Place of Presentation: 広島
  • Year and Date: 2010-06-02
• [Presentation] 化学イオン化質量分析計を用いた大気中亜硝酸濃度測定手法の高度化 (2009)
  • Author(s): 齋藤亮介,廣川淳,真船文隆
  • Organizer: 第15回大気化学討論会
  • Place of Presentation: つくば
  • Year and Date: 2009-10-21
• [Presentation] 化学イオン化質量分析計を用いた大気中亜硝酸濃度測定手法の高度化 (2009)
  • Author(s): 齋藤亮介、廣川淳、真船文隆
  • Organizer: 第15回大気化学討論会
  • Place of Presentation: つくば国際会議場(つくば)
  • Year and Date: 2009-10-20
• [Presentation] 化学イオン化質量分析計を用いた大気中亜硝酸濃度測定手法の開発 (2008)
  • Author(s): 廣川淳,齋藤亮介,真船文隆
  • Organizer: 第14回大気化学討論会
  • Place of Presentation: 横浜
  • Year and Date: 2008-10-29
• [Presentation] 濡れ壁反応管を用いた大気成分と液体との不均一反応の研究 (2008)
  • Author(s): 廣川淳,上野晶鋭,加藤雄大,真船文隆
  • Organizer: 第14回大気化学討論会
  • Place of Presentation: 横浜
  • Year and Date: 2008-10-29
• [Presentation] 化学イオン化質量分析計を用いた大気中亜硝酸濃度測定手法の開発 (2008)
  • Author(s): 廣川淳、齋藤亮介、真船文隆
  • Organizer: 第14回大気化学討論会
  • Place of Presentation: 地球フロンティア研究センター(横浜)
  • Year and Date: 2008-10-29
• [Presentation] 塩化物イオン移動反応を用いた大気微量成分の化学イオン化 (2008)
  • Author(s): 廣川淳,加藤雄大,真船文隆
  • Organizer: 第24回化学反応討論会
  • Place of Presentation: 札幌
  • Year and Date: 2008-06-02