著者
田中 光太郎 高橋 けんし 戸野倉 賢一
出版者
一般社団法人 日本機械学会
雑誌
日本機械学会論文集B編 (ISSN:18848346)
巻号頁・発行日
vol.78, no.789, pp.1003-1007, 2012 (Released:2012-05-25)
参考文献数
7

A near-IR laser based spectrometer for continuous measurement of stable carbon isotopes in CO2 has been developed. 12CO2 and 13CO2 are detected with wavelength modulation spectroscopy and a Herriott-type multi-pass cell with a optical path length of 29.9 m using a distributed feedback laser diode in the 2-μm wavelength region. To measure the isotope ratio precisely, the influence of pressure and temperature variation in δ13C was evaluated. The limit of detection for 12CO2 in our system was 16 ± 1 ppbv. The precision in the determination of δ13C was 0.1‰ for 120 seconds signal integration time at ambient concentration levels. We demonstrate that our system enables automated continuous measurements of δ13C of CO2 in ambient air without any complex operation by users.

言及状況

外部データベース (DOI)

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実はサイボーグでレーザー分光によるCO2の測定ができるとかでも良い https://t.co/lw4bv0lfc8

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