Abstract
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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KIPPING, P. Determination of Hydrogen in Gaseous Mixtures by Gas-Chromatography. Nature 191, 270–271 (1961). https://doi.org/10.1038/191270b0
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DOI: https://doi.org/10.1038/191270b0
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