演題概要

オーラルセッション

第2日　6月23日（木）　16:20～16:40　A会場（メインホール）

2A-O2-1620　　PDF

化学イオン化質量分析法の大気科学への応用：北米西部の山火事から発生する揮発性有機化合物の計測

(¹横市大院生命ナノ・ ²米国立海洋大気庁)
^o関本奏子¹・ Coggon, Matthew²・ Gkatzelis, Georgios²・ Stockwell, Chelsea²・ Warneke, Carsten²

Volatile organic compounds (VOCs) in the troposphere are emitted from a wide variety of natural and man-made sources and resulting in environmental issues such as air pollution and climate change. Chemical ionization mass spectrometry (CI-MS) techniques using specific reagent ions such as H3O+ 1) and NO+ 2) allow real-time measurements of various VOCs in air with high sensitivity and fast time response. Modern CI-MS equipped with time-of-flight (ToF) mass analyzers can measure hundreds of compounds simultaneously. The applications of CI-MS have greatly promoted understanding VOC sources and their roles in environmental issues, and therefore, CI-MS has become a well-established analytical technique for in situ VOC measurements in atmospheric sciences. In this presentation, recent applications of CI-MS for atmospheric science are presented, using following examples from research in biomass burning emissions and chemistry.