Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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A Direct Detection of $CO_2$ in Sealed-off $CO_2$ Discharge Tube by Optoacoustic Effect

  • Kim Sung-Ho (Department of Chemistry, Soonchunhyang University) ;
  • Choi Joong-Gill (Department of Chemistry, Yonsei University) ;
  • Cho Ung-In (Department of Chemistry, Yonsei University)
  • Published : 1994.01.20
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Abstract

A simple analytical method that allows direct monitoring of small amount of CO$_2$ in a CO$_2$ discharge tube which utilizes the optoacoustic detection technique is described. The dependence of the optoacoustic signal on the mole fraction of CO$_2$ was shown that the system responded linearly to the amount of CO$_2$ present in the miniature discharge cavity equipped with Cu electrodes. It was also found that fraction of dissociated CO$_2$ varied from 14 to 37% of the initial concentration which depended on the current and the pressure in the tube. This simple and easy detection method has proven to possess the practical advantages over the conventional systems for the study of CO$_2$ laser electrodes.

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  1. Photoacoustic measurements for catalytic effects of perovskite electrodes in a sealed-off CO<sub>2<> discharge tube vol.69, pp.9, 1994, https://doi.org/10.1063/1.1149117