Next Article in Journal
In Situ, Rotor-Based Drone Measurement of Wind Vector and Aerosol Concentration in Volcanic Areas
Previous Article in Journal
Air Pollution in Moscow Megacity: Data Fusion of the Chemical Transport Model and Observational Network
Previous Article in Special Issue
Winter Ozone Pollution in Utah’s Uinta Basin is Attenuating
Open AccessArticle

Sources of Formaldehyde in Bountiful, Utah

1
Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, USA
2
Department of Chemistry, Snow College, Richfield, UT 84701, USA
3
Utah Division of Air Quality, Salt Lake City, UT 84116, USA
4
Chemical Engineering, University of Utah, Salt Lake City, UT 84112, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Marc L. Mansfield
Atmosphere 2021, 12(3), 375; https://doi.org/10.3390/atmos12030375
Received: 27 January 2021 / Revised: 2 March 2021 / Accepted: 4 March 2021 / Published: 13 March 2021
The U.S Environmental Protection Agency’s National Air Toxics Trends Stations Network has been measuring the concentration of hazardous air pollutants (HAPs) including formaldehyde (HCHO) since 2003. Bountiful, Utah (USA) has served as one of the urban monitoring sites since the network was established. Starting in 2013, the mean concentration of HCHO measured in Bountiful, Utah exceeded the non-cancer risk threshold and the 1 in 1 million cancer risk threshold. In addition, the measured concentrations were more than double those found at surrounding locations in Utah. A Positive Matrix Factorization (PMF) analysis using PMF-EPA v5 was performed using historical data (2004–2017) to better understand the sources of formaldehyde in the region. The historical data set included samples that were collected every sixth day on a 24 h basis. Beginning in February 2019 an eight-week air sampling campaign was initiated to measure formaldehyde on a two-hour averaged basis. In addition, the measurements of O3, NO, NO2, benzene, toluene, ethylbenzene, and xylenes (BTEX) were also collected. Corresponding back-trajectory wind calculations for selected time periods were calculated to aid in the understanding of the effects of BTEX emission sources and formaldehyde formation. The results indicate that the principal formaldehyde sources are associated with biomass burning and the conversion of biogenic emissions into HCHO. Back-trajectory wind analysis of low (≤3 ppbv) and high (23.8–32.5 ppbv) HCHO cases show a clear dominance of high HCHO originating in trajectories that come from the southwest and pass over the area of the oil refineries and industrial sources in the north Salt Lake City area. View Full-Text
Keywords: formaldehyde; source apportionment; positive matrix factorization; Utah air quality formaldehyde; source apportionment; positive matrix factorization; Utah air quality
Show Figures

Figure 1

MDPI and ACS Style

Bhardwaj, N.; Kelsch, A.; Eatough, D.J.; Thalman, R.; Daher, N.; Kelly, K.; Jaramillo, I.C.; Hansen, J.C. Sources of Formaldehyde in Bountiful, Utah. Atmosphere 2021, 12, 375. https://doi.org/10.3390/atmos12030375

AMA Style

Bhardwaj N, Kelsch A, Eatough DJ, Thalman R, Daher N, Kelly K, Jaramillo IC, Hansen JC. Sources of Formaldehyde in Bountiful, Utah. Atmosphere. 2021; 12(3):375. https://doi.org/10.3390/atmos12030375

Chicago/Turabian Style

Bhardwaj, Nitish; Kelsch, Ariel; Eatough, Delbert J.; Thalman, Ryan; Daher, Nancy; Kelly, Kerry; Jaramillo, Isabel C.; Hansen, Jaron C. 2021. "Sources of Formaldehyde in Bountiful, Utah" Atmosphere 12, no. 3: 375. https://doi.org/10.3390/atmos12030375

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop