Title

Fused Silica Capillary Column Gas Chromatography with Tandem Flame Ionization-photoionization Detection for the Characterization of in Situ Coal Gasification By-products

Abstract

A photoionization detector (PID) is relatively more sensitive to aromatic than aliphatic compounds, whereas a flame ionization detector (FID) responds sensitively to all hydrocarbons. Their simultaneous use in a tandem arrangement provides a means of differentiating between aliphatic and aromatic hydrocarbons separated by gas chromatography. Employed in combination with fused silica columns having superior separation properties, this detector system provides a powerful tool for the characterization of complex mixtures of volatile organic compounds. This application requires a special PID which is gas-tight and has a low volume. Such a system is described for the characterization of organic by-products of in situ coal gasification. A photoionization detector (PID) is relatively more sensitive to aromatic than aliphatic compounds, whereas a flame ionization detector (FID) responds sensitively to all hydrocarbons. Their simultaneous use in a tandem arrangement provides a means of differentiating between aliphatic and aromatic hydrocarbons separated by gas chromatography. Employed in combination with fused silica columns having superior separation properties, this detector system provides a powerful tool for the characterization of complex mixtures of volatile organic compounds. This application requires a special PID which is gas-tight and has a low volume. Such a system is described for the characterization of organic by-products of in situ coal gasification.

Department(s)

Chemistry

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1982 Taylor & Francis, All rights reserved.


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