Abstract
The feasibility of using an SIT Vidicon as a gas-phase fluorescence detector for gas chromatography is demonstrated. Operation of the SIT in both the “real time” and integration modes is discussed. The SIT system can subtract stored signals (spectra) from one another, so that background correction is possible and the spectral selectivity of vapor-phase fluorescence detection is enhanced. Gas-phase spectra and limits of detection for several polyaromatic hydrocarbons are given; the SIT gives limits of detection about a factor of five larger than those obtained with a photomultiplier (PM) tube (operated in a nonscanning mode).The relative merits of using the SIT system or a fast scanning (PM) system for measuring transient signals are discussed.
Published Version
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