Abstract

The alternating current plasma detector for gas chromatography is shown to be a useful detector for selective organochlorine detection. The detector incorporates a simple design and a power source that produces a stable discharge which does not extinguish under high solvent concentration conditions. The plasma discharge produces diatomic emission of CCl species, with few atomic chlorine emission lines. Detection limits for various organochlorine compounds are approximately 1.0 ng/s. The detector exhibits a complex response dependent on molecular structure and environment. Detector selectivity towards CCl versus C 2 emission is presented, along with various selective chlorine detection applications in complex matrices.

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