Memoirs of the Faculty of Engineering, Okayama University 27巻 1号
1992-11-25 発行
香川 直己
The Graduate School of Natural Science and Technology
和田 修己
Department of Electrical and Electronic Engineering
Hai, Xu
Measurement and Test Center, North-East Normal University
古賀 隆治
Department of Electrical and Electronic Engineering
Sano, Hiroya
Faculty of Engineering, Fukuyama University
Inubushi, Kazuyuki
Faculty of Bioresource, Mie University
A prototype device based on the tunable diode laser absorption spectrometry was constructed and the atmospheric methane concentration near the terrain in a rice paddy field was measured. An open optical path of 50 m length was employed along with a PbSnTe diode laser. Diurnal change of methane density with 30 seconds temporal resolution was recorded associated with meteorological parameters. A feasibility was proven for a practical application for in situ study of atmospheric methane.
