Application of a rapid scanning plasma emission detector and gas chromatography for multi-element quantification of halogenated hydrocarbons.
A microwave induced plasma emission detector is used as an element-selective detector for gas chromatography. The spectrometer, which is fitted with a rapid scanning galvanometer mirror, is used to scan a pre-selected spectral window to provide information in the multi-element mode. This information is used to determine the per mole response of some elements as a function of molecular structure. Despite the low microwave powers employed, the response per mole appears to be independent of the molecular structure. Detection limits and linear dynamic ranges are determined by narrowing the spectral coverage to increase the sensitivity. Calibration curves are linear over several orders of magnitude and detection limits are at the pg/sec levels.
D002849:Chromatography, Gas / Q000295:instrumentation / Q000379:methods; D006846:Hydrocarbons, Halogenated / Q000032:analysis*; D007306:Insecticides / Q000032:analysis; D008872:Microwaves
D006846:Hydrocarbons, Halogenated; D007306:Insecticides