Analytical Sciences

Rapid Temperature-Programmed Separation of Carbon Monoxide and Carbon Dioxide on a Packed Capillary Column in Gas Chromatography: Application to the Evaluation of Photocatalytic Activity of TiO₂

Ikuo UETA,* Ayako MIZUGUCHI,* Kazue TANI,* Susumu KAWAKUBO,* and Yoshihiro SAITO**

*Department of Applied Chemistry, University of Yamanashi, Kofu 400-8511, Japan
**Department of Environmental and Life Sciences, Toyohashi University of Technology, Toyohashi 441-8580, Japan

Carbon monoxide (CO) and carbon dioxide (CO₂) were determined in a conventional capillary gas chromatography–flame ionization detector (GC-FID) by introducing a packed-capillary column and a methanizer. Due to good compatibility with rapid temperature-programmed operation of the packed capillary column, several volatile compounds, including CO and CO₂, were rapidly eluted along with satisfactory resolution and sample loading capacity. The limit of quantifications of CO and CO₂ were 5 and 3 ppm, respectively, with an injection volume of 0.5 mL. The developed system was then successfully applied to evaluating the photocatalytic decomposition of volatile organic compounds on titanium dioxide (TiO₂).

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