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. 2019 Jun;69(6):778-788.
doi: 10.1080/10962247.2019.1587553. Epub 2019 Apr 22.

Particulate matter, nitrogen oxides, ozone, and select volatile organic compounds during a winter sampling period in Logan, Utah, USA

Shaibal Mukerjee  1 , Luther Smith  2 , Russell Long  1 , William Lonneman  1   3 , Surender Kaushik  1 , Maribel Colon  1 , Karen Oliver  1 , Donald Whitaker  1
Affiliations

Particulate matter, nitrogen oxides, ozone, and select volatile organic compounds during a winter sampling period in Logan, Utah, USA

Shaibal Mukerjee et al. J Air Waste Manag Assoc. 2019 Jun.

Abstract

Particulate matter mass (PM), trace gaseous pollutants, and select volatile organic compounds (VOCs) with meteorological variables were measured in Logan, Utah (Cache Valley), for >4 weeks during winter 2017 as part of the Utah Winter Fine Particle Study (UWFPS). Higher PM levels for short time periods and lower ozone (O3) levels were present due to meteorological and mountain valley conditions. Nitrogenous pollutants were relatively strongly correlated with PM variables. Diurnal cycles of NOx, O3, and fine PM(PM 2.5) (aerodynamic diameter <2.5 μm [PM2.5]) suggested formation from NOx. O3 levels increased from early morning into midafternoon, and NOx and PM2.5 increased throughout the morning, followed by sharp decreases. Toluene/benzene and xylenes/benzene ratios and VOC correlations with nitrogenous and PM species were indicative of local traffic sources. Wind sector comparisons suggested that pollutant levels were lower when winds were from nearby mountains to the east versus winds from northerly or southerly origins. Implications: The Cache Valley in Idaho and Utah has been designated a PM2.5 nonattainment area that has been attributed to air pollution buildup during winter stagnation events. To inform state implementation plans for PM2.5 in Cache Valley and other PM2.5 nonattainment areas in Utah, a state and multiagency federal research effort known as the UWFPS was conducted in winter 2017. As part of the UWFPS, the U.S. Environmental Protection Agency (EPA) measured ground-based PM species and their precursors, VOCs, and meteorology in Logan, Utah. Results reported here from the EPA study in Logan provide additional understanding of wintertime air pollution conditions and possible sources of PM and gaseous pollutants as well as being useful for future PM control strategies in this area.

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Figures

Figure 1.
Figure 1.
The 12-hr averages of (a) PM2.5 and PM10 and (b) wind speed and pressure.
Figure 2.
Figure 2.
Hour-of-the day averages of (a) NO2, NOx, and O3 and (b) PM2.5.
See this image and copyright information in PMC

References

    1. Agency for Toxic Substances and Disease Registry. 1998. Toxicological profile for chloromethane. Public Health Service, US Department of Health and Human Services, Atlanta, GA: Accessed July, 2018 https://www.atsdr.cdc.gov/toxprofiles/tp106.pdf.
    1. Baasandorj M, Brown S, Hoch S, Crosman E, Long R, Silva P, Mitchell L, Hammond I, Martin R, Bares R, et al. 2018. Utah winter fine particulate study. Final Report. Accessed May, 2018 https://documents.deq.utah.gov/air-quality/planning/technical-analysis/r....
    1. Baasandorj M, Hoch SW, Bares R, Lin JC, Brown SS, Millet DB, Martin R, Kelly K, Zarzana KJ, Whiteman D, et al. 2017. Coupling between chemical and meteorological processes under persistent cold-air pool conditions: Evolution of wintertime PM2.5 pollution events and N2O5 observations in Utah’s Salt Lake valley. Environ. Sci. Technol. 51:5941–50. doi: 10.1021/acs.est.6b06603. - DOI - PubMed
    1. Brown SS, and Baasandorj M. 2017. Utah winter fine particulate study (UWFPS) research flights of the NOAA twin otter to address particulate matter pollution in urban areas of the Great Salt Lake Basin. Accessed May, 2018 https://www.esrl.noaa.gov/csd/groups/csd7/measurements/2017uwfps/whitepa....
    1. Gelencsér A, Siszler K, and Hlavay J. 1997. Toluene–benzene concentration ratio as a tool for characterizing the distance from vehicular emission sources. Environ. Sci. Technol. 31:2869–72. doi: 10.1021/es970004c. - DOI

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