演題概要

オーラルセッション

第3日　5月21日（金）　16:25～16:45　E会場（Zoom）

3E-O15-1625　　PDF

揮発性有機化合物の網羅的な直接その場分析に向けたプロトン移動反応イオン化 - マルチターン飛行時間型質量分析装置の開発

(¹阪大院理・ ²阪大リノ工作・ ³MSI.TOKYO)
^o河井洋輔¹・ 河居伸哉¹・ 古谷浩志²・ 石原盛男¹・ 渡辺励起³・ 中山邦彦³・ 神納育則³・ 畠山典久³・ 豊田岐聡¹

Volatile Organic Compounds (VOCs) released into the atmosphere by burning fossil fuels and biological activities are highly chemically reactive, so they are an important causative agent of air pollution such as photochemical oxidants and atmospheric aerosol particles (PM_2.5). For comprehensive on-site real-time monitoring of a wide variety of VOCs, we have developed PTR-MULTUM consisting of a multi-turn time-of-flight mass spectrometer (MULTUM) with a proton transfer reaction (PTR) ion source. Performance evaluation confirmed that a good linear response was observed for 2 orders of concentration magnitude, and the limit of detection was around 6 ppbv for one-minute data accumulation.