GC Detectors: From Thermal Conductivity to Vacuum Ultraviolet Absorption

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Some might consider gas chromatography (GC) a mature technique. However, several substantial advances in GC technology in the past few years have proven that there is still room for innovation. Here, we present a brief history of GC detectors, leading to the most recent introduction of a vacuum ultraviolet (VUV) absorption detector, which has been shown to provide significant benefit in areas where mass spectrometry (MS) detection has problems. It provides full scan absorption spectra in the range of 120–240 nm, where all gas-phase chemical species absorb and have unique spectral features. VUV detection can be used to deconvolute signals from coeluted analytes and has detection sensitivity on par with MS detection.

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