Development of an online measurement system for size-resolved chemical composition of aerosols during new particle formation

• Project/Area Number: 25281004
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: TAKEGAWA Nobuyuki 首都大学東京, 理工学研究科, 教授 (00324369)
• Co-Investigator(Kenkyū-buntansha): SAKURAI Hiromu 産業技術総合研究所, 物質計測標準研究部門, 研究グループ長 (50392618)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥18,200,000 (Direct Cost: ¥14,000,000、Indirect Cost: ¥4,200,000); Fiscal Year 2015: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2014: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2013: ¥10,790,000 (Direct Cost: ¥8,300,000、Indirect Cost: ¥2,490,000)
• Keywords: 環境計測 / 物質循環 / 地球温暖化 / 大気エアロゾル / 組成分析 / 新粒子生成

Outline of Final Research Achievements

Aerosols have significant influences on the Earth's radiative budget due to direct and indirect effects. New particle formation is a key process affecting the number concentration of aerosol particles and cloud condensation nuclei. This study is aimed at developing a new system for online measurement of aerosol composition during new particle formation/growth events by combining an aerosol particle classifier and mass spectrometer. We have developed an aerodynamic lens for nanoparticles (nano-ADL) and constructed an aerosol composition analyzer using the nano-ADL and laser desorption mass spectrometer. We also constructed a tandem system of an electrostatic classifier and aerosol particle mass analyzer and developed an automated control software for the system. Although the overall integration of the classifier and mass spectrometer has not been completed, we have established an important technological basis for the study of new particle formation in Asia.

Research Products

• [Journal Article] Evaluation of a particle trap laser desorption mass spectrometer (PT-LDMS) for the quantification of sulfate aerosols (2016)
  • Author(s): Ozawa, Y., N. Takeda, T. Miyakawa, M. Takei, N. Hirayama and N. Takegawa
  • Journal Title: Aerosol Science and Technology Volume: 50 Issue: 2 Pages: 173-186
  • DOI: 10.1080/02786826.2016.1139685
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Variability of aerosol particle number concentrations observed over the western Pacific in the spring of 2009 (2014)
  • Author(s): Takegawa N., N. Moteki, N. Oshima, M. Koike, K. Kita, N. Oshima, A. Shimizu, N. Sugimoto, and Y. Kondo
  • Journal Title: J. Geophys. Res Volume: 119 Issue: 23 Pages: 13474-13488
  • DOI: 10.1002/2014jd022014
  • Peer Reviewed
• [Presentation] ナノ粒子分析法評価のための凝縮粒子発生法の開発 (2016)
  • Author(s): 村上 功一、大竹 啓記、竹川 暢之
  • Organizer: 日本地球惑星科学連合2016年大会
  • Place of Presentation: 幕張メッセ国際会議場 (千葉県千葉市)
  • Year and Date: 2016-05-25
• [Presentation] 低圧条件における凝縮粒子カウンタの性能評価 (2015)
  • Author(s): 竹川 暢之、飯田 健次郎、桜井 博
  • Organizer: 第21回大気化学討論会
  • Place of Presentation: 東京工業大学 (東京都目黒区)
  • Year and Date: 2015-10-21
• [Presentation] レーザー誘起白熱光-質量分析計 (LII-MS) を用いたブラックカーボン混合状態別のエアロゾル化学組成のオンライン測定 (2015)
  • Author(s): 小澤 優哉、武田 直希、小泉 和裕、竹川 暢之
  • Organizer: 日本地球惑星科学連合2015年大会
  • Place of Presentation: 幕張メッセ国際会議場 (千葉県千葉市)
  • Year and Date: 2015-05-27
• [Presentation] ナノ粒子用エアロダイナミックレンズの開発と初期評価 (2015)
  • Author(s): 大竹 啓記、竹川 暢之
  • Organizer: 日本地球惑星科学連合2015年大会
  • Place of Presentation: 幕張メッセ国際会議場 (千葉県千葉市)
  • Year and Date: 2015-05-27
• [Presentation] 粒子トラップ-レーザー脱離質量分析計を用いた硝酸塩エアロゾルのオンライン測定法の評価 (2015)
  • Author(s): 大泉 智隆、小澤 優哉、竹川 暢之
  • Organizer: 日本地球惑星科学連合2015年大会
  • Place of Presentation: 幕張メッセ国際会議場 (千葉県千葉市)
  • Year and Date: 2015-05-27
• [Presentation] 粒子トラップ-レーザー脱離質量分析計による硫酸塩エアロゾルの定量 (2014)
  • Author(s): 小澤 優哉、武田 直希、宮川 拓真、平山 紀友、竹川 暢之
  • Organizer: 第20回大気化学討論会
  • Place of Presentation: 府中グリーンプラザ (東京都府中市)
  • Year and Date: 2014-10-27 – 2014-10-29