Letter | Published:

Determination of Hydrogen in Gaseous Mixtures by Gas-Chromatography

Naturevolume 191pages270271 (1961) | Download Citation



IN the analysis of gaseous mixtures by gas-solid chromatography using hot-wire or thermistor detectors, it is usual to reduce the signal to the recorder, when necessary, by an attenuating system in the form of a potentiometric chain so that only a known proportion of the signal is applied to the recorder. This method results in the main components of a mixture being measured less accurately than impurities or components of small concentration. This is particularly true when hydrogen is a main component, as it has a thermal conductivity seven or eight times as great as most other gases or vapours, necessitating a large measure of attenuation to keep its peak on the Chromatographic chart.

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  1. Warren Spring Laboratory, Stevenage, Herts

    • P. J. KIPPING


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