Intra-urban spatial variability of PM2.5-bound carbonaceous components

Xie, Mingjie; Coons, Teresa L.; Dutton, Steven J.; Milford, Jana B.; Miller, Shelly L.; Peel, Jennifer L.; Vedal, Sverre; Hannigan, Michael P.

doi:10.1016/j.atmosenv.2012.05.041

Cited by 27Atmospheric chemistry and aerosolsAir Quality and Health ImpactsToxic Organic Pollutants Impact

Intra-urban spatial variability of PM2.5-bound carbonaceous components

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Xie, Mingjie, Coons, Teresa L., Dutton, Steven J., Milford, Jana B., Miller, Shelly L., Peel, Jennifer L., Vedal, Sverre, Hannigan, Michael P.·2012·Atmospheric Environment

DOI 10.1016/j.atmosenv.2012.05.041PMC PMC4267573

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Abstract

The Denver Aerosol Sources and Health (DASH) study was designed to evaluate associations between PM 2.5 species and sources and adverse human health effects. The DASH study generated a five-year (2003-2007) time series of daily speciated PM 2.5 concentration measurements from a single, special-purpose monitoring site in Denver, CO. To evaluate the ability of this site to adequately represent the short term temporal variability of PM 2.5 concentrations in the five county Denver metropolitan area, a one year supplemental set of PM 2.5 samples was collected every sixth day at the original DASH monitoring site and concurrently at three additional sites. Two of the four sites, including the original DASH site, were located in residential areas at least 1.9 km from interstate highways. The other two sites were located within 0.3 km of interstate highways. Concentrations of elemental carbon (EC), organic carbon (OC), and 58 organic molecular markers were measured at each site. To assess spatial variability, site pairs were compared using the Pearson correlation coefficient (r) and coefficient of divergence (COD), a statistic that provides information on the degree of uniformity between monitoring sites. Biweekly co-located samples collected from July 2004 to September 2005 were also analyzed and used to estimate the uncertainty associated with sampling and analytical measurement for each species. In general, the two near-highway sites exhibited higher concentrations of EC, OC, polycyclic aromatic hydrocarbons (PAHs), and steranes than did the more residential sites. Lower spatial heterogeneity based on r and COD was inferred for all carbonaceous species after considering their divergence and lack of perfect correlations in co-located samples. Ratio-ratio plots combined with available gasoline- and diesel-powered motor vehicle emissions profiles for the region suggested a greater impact to high molecular weight (HMW) PAHs from diesel-powered vehicles at the near-highway sites and a more uniformly distributed impact to ambient hopanes from gasoline-powered motor vehicles at all four sites.

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The major components of PAHs in Seoul and Denver were similar, and average winter PAH levels were 16.1 ± 10.1 ng/m3 in Seoul and 3.1 ± 0.4 ng/m3 in Denver.
“The major components of PAHs in Seoul and Denver were similar, and the average levels of PAHs during the winter season, according to the published data, are 16.1 ± 10.1ng/m3 and 3.1 ± 0.4 ng/m3 in Seoul and Denver, respectively (30–32).”
From Particulate matter causes skin barrier dysfunction. (2021) · cites this paper as [32]
Section 3.1 (page unavailable) reports an average PAH concentration of 3.19 ng/m³ at one Denver site, close to the cited 3.1 ng/m³. It does not identify that value as a winter average or give the ±0.4 figure. Searches for Seoul and 16.1 ± 10.1 found no comparison of the cities’ major PAH components or support for the Seoul figure. (LLM, conf=0.82)
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“4 ng/m3 in Seoul and Denver, respectively (30-32).”
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Authors: Xie, M., Coons, T. L., Dutton, S. J., Milford, J. B., Miller, S. L., Peel, J. L., Vedal, S., & Hannigan, M. P.
Affiliations: University of Colorado Boulder (US)
Environmental Protection Agency (US)
Colorado State University (US)
University of Washington (US)
Corresponding author: Hannigan, Michael P.
ORCID: Xie, Mingjie
Milford, Jana B.
Miller, Shelly L.
Peel, Jennifer L.
Vedal, Sverre
Hannigan, Michael P.
Venue: Atmospheric Environment
Publisher: Elsevier BV
Published: 2012-12
Volume: 60
Pages: 486-494
ISSN: 1352-2310 (ISSN-L)
DOI: 10.1016/j.atmosenv.2012.05.041
PMC: PMC4267573
OpenAlex: W1977779283
Cited by: 27
References: 48
Citations by year: 2025: 1 · 2024: 4 · 2023: 4 · 2022: 2 · 2021: 3 · 2020: 5 · 2018: 3 · 2015: 3 · 2014: 1 · 2012: 1
FWCI: 1.09
Type: journal article
Language: en
Open access: green
www.ncbi.nlm.nih.gov
Licence: www.elsevier.com/tdm/userlicense/1.0/ (tdm)
Locations: Atmospheric Environment (publishedVersion)
PubMed (publishedVersion)
PubMed Central (acceptedVersion)
Funders: NIEHS (RO1 ES010197)
Topics: Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Atmospheric chemistry and aerosols
Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Air Quality and Health Impacts
Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Toxic Organic Pollutants Impact
Keywords: PM2.5, carbonaceous aerosols, spatial variability, elemental carbon, organic carbon, polycyclic aromatic hydrocarbons, steranes, hopanes, highway proximity, diesel vehicle emissions, gasoline vehicle emissions, organic molecular markers, Denver metropolitan area

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Intra-urban spatial variability of PM2.5-bound carbonaceous components

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