Abstract
WHEN small quantities of atmospheric gases are added to pure helium, the electrical conductivity of the helium increases. This effect forms the basis of a sensitive method for detecting these gases in the effluent of a gas chromatography column.
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KARMEN, A., GIUFFRIDA, L. & BOWMAN, R. Detection by Ionization of Atmospheric Gases during Analysis by Gas Chromatography. Nature 191, 906–907 (1961). https://doi.org/10.1038/191906a0
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DOI: https://doi.org/10.1038/191906a0
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