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Fine-Scale Source Apportionment Including Diesel-Related Elemental and Organic Constituents of PM 2.5 across Downtown Pittsburgh

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  • Brett J. Tunno

    (University of Pittsburgh Graduate School of Public Health, Department of Environmental and Occupational Health, Pittsburgh, PA 15219, USA)

  • Sheila Tripathy

    (University of Pittsburgh Graduate School of Public Health, Department of Environmental and Occupational Health, Pittsburgh, PA 15219, USA
    Drexel University Dornsife School of Public Health, Department of Environmental and Occupational Health, Philadelphia, PA 15219, USA)

  • Ellen Kinnee

    (University of Pittsburgh Graduate School of Public Health, Department of Environmental and Occupational Health, Pittsburgh, PA 15219, USA)

  • Drew R. Michanowicz

    (University of Pittsburgh Graduate School of Public Health, Department of Environmental and Occupational Health, Pittsburgh, PA 15219, USA)

  • Jessie LC Shmool

    (University of Pittsburgh Graduate School of Public Health, Department of Environmental and Occupational Health, Pittsburgh, PA 15219, USA)

  • Leah Cambal

    (University of Pittsburgh Graduate School of Public Health, Department of Environmental and Occupational Health, Pittsburgh, PA 15219, USA)

  • Lauren Chubb

    (University of Pittsburgh Graduate School of Public Health, Department of Environmental and Occupational Health, Pittsburgh, PA 15219, USA)

  • Courtney Roper

    (University of Pittsburgh Graduate School of Public Health, Department of Environmental and Occupational Health, Pittsburgh, PA 15219, USA)

  • Jane E. Clougherty

    (University of Pittsburgh Graduate School of Public Health, Department of Environmental and Occupational Health, Pittsburgh, PA 15219, USA
    Drexel University Dornsife School of Public Health, Department of Environmental and Occupational Health, Philadelphia, PA 15219, USA)

Abstract

Health effects of fine particulate matter (PM 2.5 ) may vary by composition, and the characterization of constituents may help to identify key PM 2.5 sources, such as diesel, distributed across an urban area. The composition of diesel particulate matter (DPM) is complicated, and elemental and organic carbon are often used as surrogates. Examining multiple elemental and organic constituents across urban sites, however, may better capture variation in diesel-related impacts, and help to more clearly separate diesel from other sources. We designed a “super-saturation” monitoring campaign of 36 sites to capture spatial variance in PM 2.5 and elemental and organic constituents across the downtown Pittsburgh core (~2.8 km 2 ). Elemental composition was assessed via inductively-coupled plasma mass spectrometry (ICP-MS), organic and elemental carbon via thermal-optical reflectance, and organic compounds via thermal desorption gas-chromatography mass-spectrometry (TD-GCMS). Factor analysis was performed including all constituents—both stratified by, and merged across, seasons. Spatial patterning in the resultant factors was examined using land use regression (LUR) modelling to corroborate factor interpretations. We identified diesel-related factors in both seasons; for winter, we identified a five-factor solution, describing a bus and truck-related factor [black carbon (BC), fluoranthene, nitrogen dioxide (NO 2 ), pyrene, total carbon] and a fuel oil combustion factor (nickel, vanadium). For summer, we identified a nine-factor solution, which included a bus-related factor (benzo[ghi]fluoranthene, chromium, chrysene, fluoranthene, manganese, pyrene, total carbon, total elemental carbon, zinc) and a truck-related factor (benz[a]anthracene, BC, hopanes, NO 2 , total PAHs, total steranes). Geographic information system (GIS)-based emissions source covariates identified via LUR modelling roughly corroborated factor interpretations.

Suggested Citation

  • Brett J. Tunno & Sheila Tripathy & Ellen Kinnee & Drew R. Michanowicz & Jessie LC Shmool & Leah Cambal & Lauren Chubb & Courtney Roper & Jane E. Clougherty, 2018. "Fine-Scale Source Apportionment Including Diesel-Related Elemental and Organic Constituents of PM 2.5 across Downtown Pittsburgh," IJERPH, MDPI, vol. 15(10), pages 1-14, October.
    • Handle: RePEc:gam:jijerp:v:15:y:2018:i:10:p:2177-:d:173830
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    References listed on IDEAS

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    1. Brett J. Tunno & Drew R. Michanowicz & Jessie L. C. Shmool & Sheila Tripathy & Ellen Kinnee & Leah Cambal & Lauren Chubb & Courtney Roper & Jane E. Clougherty, 2018. "Spatial Patterns in Rush-Hour vs. Work-Week Diesel-Related Pollution across a Downtown Core," IJERPH, MDPI, vol. 15(9), pages 1-15, September.
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    Cited by:

    1. Borut Jereb & Brigita Gajšek & Gregor Šipek & Špela Kovše & Matevz Obrecht, 2021. "Traffic Density-Related Black Carbon Distribution: Impact of Wind in a Basin Town," IJERPH, MDPI, vol. 18(12), pages 1-17, June.
    2. Ruiling Sun & Yi Zhou & Jie Wu & Zaiwu Gong, 2019. "Influencing Factors of PM 2.5 Pollution: Disaster Points of Meteorological Factors," IJERPH, MDPI, vol. 16(20), pages 1-31, October.
    3. Yanzhuo Liu & Shanshan Song & Chunjuan Bi & Junli Zhao & Di Xi & Ziqi Su, 2019. "Occurrence, Distribution and Risk Assessment of Mercury in Multimedia of Soil-Dust-Plants in Shanghai, China," IJERPH, MDPI, vol. 16(17), pages 1-19, August.

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