Electrolytic conductivity detector

Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample

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73 231, 324449, 422 90, 422103, 436150, 436161, G01N 3108

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active

045553831

ABSTRACT:
A gas chromatograph system is provided with an improved electrolytic conductivity cell (16) for detecting a selected material species in a fluid stream from conventional gas chromatograph (10, 12) having both gas and liquid phases. Planar electrodes (80, 82) are spaced by an insulator (84) and define borehole diameters (88, 90, 92) which enhance the generated signal-to-noise ratio by providing a short fluid transit time within the conductivity detecting volume compared with the effective time of the chromatographic event of interest. A pneumatic damper (108) may be further included to reduce generated system signal noise.

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Perry et al., The Chemical Engineers' Handbook, Fifth Edition (1973).
Coulson, D. M., "Electrolytic Conductivity Detector for Gas Chromatography", Journal of Gas Chromatography (Apr. 1965), pp. 134-136.
Rhoades, J. W., et al., "Gas Chromatography and Selective Detection of N-Nitrosamines", Journal of Chromatographic Science, vol. 8 (Oct. 1970), pp. 616-617.
Jones, P., et al., "Versatile Electrolytic Conductivity Detector for Gas Chromatography", Journal of Chromatography 73 (1972), pp. 19-28.
Dolar, J. W., et al., "Selective Detection of Chlorinated Insecticides in the Presence of Polychlorinated Biphenyls", Journal of the AOAC, vol. 55, No. 3 (1972), pp. 537-538.

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