Microwave-induced Plasma Atomic Emission Spectrometer Used as the Detector for On-line Coupled High-performance Liquid Chromatography–Gas Chromatography

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Chongrong Jia, Xiuhong Wang and Qingyu Ou


Abstract

Atmospheric helium microwave-induced plasma atomic emission spectrometry (MIP-AES) was used successfully as a mode of detection for on-line coupled LC–GC. A loop-type interface was used for the on-line coupling. An early solvent vapor exit was used between the retention gap and the separation capillary column to accelerate solvent evaporation. The interface between MIP-AES and GC was achieved using a TM010 cavity operated at atmospheric pressure. On-line coupled LC–GC provided a high efficiency separation for analytes in a complex sample matrix using LC as an on-line clean-up and enrichment approach. MIP-AES offered simultaneous multi-element detection ability which provided valuable information for the correct identification of compounds.


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