表題番号:2020C-357 日付:2021/02/17
研究課題植物起源揮発性有機化合物のオゾン反応性としての包括把握のための装置汎用化の試み
研究者所属(当時) 資格 氏名
(代表者) 人間科学学術院 人間科学部 教授 松本 淳
研究成果概要
A unique system that uses the total reactivity with ozone (RO3) has been developed for measuring biogenic volatile organic compounds (BVOCs) emitted from vegetation into the atmosphere. Recently, the RO3 analyzer has been applied to ambient observation in a forest atmosphere and BVOCs emission have been discussed. However, the analyzer is still not versatile due to ozone analyzers in the system. In order to realize field observations in various environments, it is necessary to construct the versatile RO3 monitor. In this study, fundamental experiments were conducted as follows: (1) Instead of highly sensitive ozone analyzers (handmade, chemiluminescence technique), less sensitive O3 monitors (commercial-based, UV absorption technique) were utilized to measure ozone reduction due to VOCs reactions. As a result of preliminary characterization and calibration of the prototype of versatile RO3 analyzer, the limit of detection reached 3 x 10-5 s-1 (S/N=3, 600-s average). (2) Then, as a practical test of the versatile RO3 analyzer, measurements of RO3 in the vapor sample of cryptomeria japonica leaf essential oil were demonstrated. The trace level signal of RO3 was captured. Consequently, it was confirmed experimentally that the versatile system could be promising for capturing BVOCs emission as RO3.