Abstract
An ultraviolet (UV) detector with a liquid cell, which is usually used as a detector in liquid chromatography, was used as a selective detector in gas chromatography. Ethanol vapour was mixed with the effluent from the gas chromatograph, the gaseous mixture was led into a small condenser for the simultaneous condensation of the vapour and sample components, and then the condensed solution was led to the UV detector. The sensitivity for a substance that contains one benzene ringis nearly the same as that with a thermal conductivity detector (TCD), but for a substance such as naphthalene it is about ten times that with a TCD. At each sample injection, two chromatograms from the UV detector and the TCD are obtained, and the structure of a sample components is indicated by comparison of the two chromatograms.
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