Abstract
CHANGES in dielectric constant, the measurement of which is quite non-destructive, have been employed for the detection of gas chromatographic bands while still in the adsorbed state1. The method involved the measurement of the change in capacity of a condenser the dielectric of which was either a portion of the column, or a finely divided carbon packing, on which the organic vapour was adsorbed. The technique used, though sensitive, involved the measurement of small changes in radio-frequency employing apparatus of some complexity.
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References
Griffith, James and Phillips, Analyst, 77, 897 (1952).
Hobday and Alexander, Electronic Engineering, 24, 134 (1952).
Sargrove, Brit. Pat. No. 558,036 (1942).
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TURNER, D. A Robust but Sensitive Detector for Gas-Liquid Chromatography. Nature 181, 1265–1266 (1958). https://doi.org/10.1038/1811265a0
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DOI: https://doi.org/10.1038/1811265a0
