The ozone forming potential (OFP) and specific reactivity (SR) of tailpipe exhaust are among the factors that determine the environmental impact of a motor vehicle. OFP and SR measurements require a lengthy determination of about 190 non-methane hydrocarbon species. A rapid gas chromatography (GC) instrument has been constructed to separate both the light (C2 - C4) and the midrange (C5 - C12) hydrocarbons in less than 10 minutes. The limit of detection is about 0.002 parts per million carbon (ppmC). Thirty exhaust samples from natural gas vehicles (NGV's) were analyzed to compare the rapid GC method with the standard GC method, which required 40-minute analyses on two different instruments. In general, evaluation of the commercial prototype from Separation Systems, Inc., indicates that a high speed, high resolution gas chromatograph can meet the need for fast, efficient exhaust hydrocarbon speciation. Recommended improvements to the rapid GC include a trap to remove carbon dioxide and water vapor, which interfere with the light-hydrocarbon analysis. Suitable gas standards for calibrating the flame ionization detectors and incomplete recovery of the heaviest midrange hydrocarbons are other issues that require further consideration.


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    Titel :

    Evaluation of a High Speed, High Resolution Gas Chromatography Instrument for Exhaust Hydrocarbon Speciation


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Farrugia, Jennifer (Autor:in) / Olson, Keith (Autor:in)

    Kongress:

    SAE 2005 World Congress & Exhibition ; 2005



    Erscheinungsdatum :

    2005-04-11




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





    2005-01-0683 Evaluation of a High Speed, High Resolution Gas Chromatography Instrument for Exhaust Hydrocarbon Speciation

    Farrugia, J. / Olson, K. / Society of Automotive Engineers | British Library Conference Proceedings | 2005



    Rapid Hydrocarbon Speciation and Exhaust Reactivity Measurements using High Speed, High Resolution Gas Chromatography

    Loo, Jeffrey F. / Olson, Keith L. / Mulawa, Patricia A. | SAE Technical Papers | 2000


    2000-01-2950 Rapid Hydrocarbon Speciation and Exhaust Reactivity Measurements using High Speed, High Resolution Gas Chromatography

    Olson, K. L. / Loo, J. F. / Mulawa, P. A. et al. | British Library Conference Proceedings | 2000