The investigators developed a system to measure black carbon (BC) and particle-bound polycyclic aromatic hydrocarbon (PAH) emission factors during roadside sampling in four cities along the United States-Mexico border, Calexico/Mexicali and El Paso/Juarez. The measurement system included a photoacoustic analyzer for BC, a photoelectric aerosol sensor for particle-bound PAHs, and a carbon dioxide (CO2) analyzer. When a vehicle with measurable emissions passed the system probe, corresponding BC, PAH, and CO 2 peaks were evident, and a fuel-based emission factor was estimated. A picture of each vehicle was also recorded with a digital camera. The advantage of this system, compared with other roadside methods, is the direct measurement of particulate matter components and limited interference from roadside dust. The study revealed some interesting trends: Mexican buses and all medium-duty trucks were more frequently identified as high emitters of BC and PAH than heavy-duty trucks or passenger vehicles. In addition, because of the high daily mileage of buses, they are good candidates for additional study. Mexican trucks and buses had higher average emission factors compared with U.S. trucks and buses, but the differences were not statistically significant. Few passenger vehicles had measurable BC and PAH emissions, although the highest emission factor came from an older model passenger vehicle licensed in Baja California. Copyright 2006 Air & Waste Management Association.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Black carbon and polycyclic aromatic hydrocarbon emissions from vehicles in the United States-Mexico border region: Pilot study


    Weitere Titelangaben:

    Emission von Rußpartikeln und aromatischen zyklischen Kohlenwasserstoffen aus Fahrzeugen in der Grenzregion USA-Maxiko: Eine Pilotstudie


    Beteiligte:


    Erscheinungsdatum :

    2006


    Format / Umfang :

    9 Seiten, 41 Quellen



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Developing Transportation-Related Environmental Policy for the United States-Mexico Border Region

    Cockerill, K. / Espinosa, J. M. / National Research Council | British Library Conference Proceedings | 1999


    Developing Transportation-Related Environmental Policy for the United States-Mexico Border Region

    Cockerill, Kristan / Espinosa, Judith M. | Transportation Research Record | 1999


    Particulate Polycyclic Aromatic Hydrocarbons and Particulate Matter Emissions From Two-Wheel Motor Vehicles

    Manni, C. / Cataldi, D. / Santino, D. et al. | SAE Technical Papers | 2005