Development of water-condensation particle growth technique for single particle mass spectrometry of atmospheric nanoparticles

2016 Fiscal Year Final Research Report

• Project/Area Number: 25410140
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Analytical chemistry
• Research Institution: Osaka University (2014-2016); The University of Tokyo (2013)
• Principal Investigator: Furutani Hiroshi 大阪大学, 科学機器リノベーション・工作支援センター, 准教授 (40536512)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: 大気ナノ粒子 / PM2.5 / 北京市 / 化学組成 / 単一微粒子質量分析

Outline of Final Research Achievements

A preliminary development of water-condensation particle growth technique for the detection of atmospheric nanoparticle with a single particle mass spectrometry and a field observation of atmospheric nanoparticles in Beijing, China for 80 days had been conducted. It was found that nozzle-type particle inlet, which performs better for the micrometer-size particles with a single mass spectrometer, should be used for the detection of the water-condensed and grown nanoparticles, rather than accommodate the diameters of water-condensed grown nanoparticles for the efficient detection with aerodynamic lens-type particle unit, which is suitable for sub-micrometer particles. Detailed data analysis of the field observation of atmospheric nanoparticles in Beijing during fall time showed that different single particle chemical types dominated under different PM2.5 mass concentration conditions.

Free Research Field

大気化学、質量分析学