Abstract
An electrolytic conductivity detector for high resolution capillary gas chromatography has been constructed. By avoiding phase separation and with direct passage of the gas—liquid mixture through the conductivity cell, a high speed of response could be achieved. Doping of the auxiliary gas with vinyl chloride as a hydrogen chloride generator results in peaks free from tailing even at trace concentrations in the halogen-selective mode of operation. The detection limit for chlorine is 1.5 · 10 −12 g/sec. The detector response is directly proportional to the chlorine content of the sample over a dynamic range larger than five orders of magnitude.
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