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New electrolytic conductivity detector for capillary gas chromatography. Analysis of chlorinated hydrocarbons

: Piringer, O.G.; Wolff, E.

Journal of Chromatography 284 (1984), Nr.2, S.373-380
ISSN: 0021-9673
ISSN: 0376-737X
ISSN: 0378-4355
Fraunhofer ILV ( IVV) ()
chromatography; Detektor(elektrolytisch); Detektor(leitfaehig); gas; Kapillare

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.