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- W2912957968 abstract "Compared to conventionnal bench top instruments, on-line GC analyzers require specific characteristics. On one hand, for some applications operating with a reactor pressure as high as several tens of bars, sample pressure has to be reduced before GC separation, or specific valves and columns have to be designed to perform separation with high carrier gas inlet pressure. On the other hand, informative detectors such as mass spectrometer are valuable but low maintenance detectors are prefered. To fit these two requirements (sampling at high pressure without decompression stage, and informative detector with low maintenance), short monolithic silica capillary column operated with inlet pressure as high as 60 bar has been hyphenated to VUV detector. Injection and column performance have been first investigated. The system has been optimized by adjusting split ratio at high pressure and by tuning two main VUV detector parameters (“average number” linked to data point averaging and make-up gas pressure) to decrease the limit of quantification. The optimization stage led to a set of experimental parameters which is a good compromise between signal-to-noise ratio and chromatographic efficiency. Finally, the hyphenated monolithic column has be used to partially separate a mixture of methane, ethane, carbon monoxide and carbon dioxide within 15 s, and the VUV deconvolution capabilities have been exploited to overcome coelution and finally separate individual signals." @default.
- W2912957968 created "2019-02-21" @default.
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- W2912957968 date "2019-06-01" @default.
- W2912957968 modified "2023-10-10" @default.
- W2912957968 title "Hyphenation of short monolithic silica capillary column with vacuum ultraviolet spectroscopy detector for light hydrocarbons separation" @default.
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- W2912957968 doi "https://doi.org/10.1016/j.chroma.2019.02.033" @default.
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