Cited by 76Toxic Organic Pollutants ImpactFire effects on ecosystemsEnvironmental and Analytical Chemistry Studies

Wildfire burn intensity affects the quantity and speciation of polycyclic aromatic hydrocarbons in soils.

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Chen, Huan, Chow, Alex T., Li, Xiu-Wen, Ni, Hong-Gang, Dahlgren, Randy A., Zeng, Hui, Wang, Jun-Jian·2018·ACS Earth and Space Chemistry

Abstract

Wildfire-altered soil may be an important source of polycyclic aromatic hydrocarbons (PAHs) in the environment. With projected increase of wildfire frequency and intensity due to changing global climate, understanding the quantity and speciation of PAHs, including halogenated PAHs (XPAHs), resulting from different burn intensities has important ramifications for environmental quality concerns and global soil carbon dynamics. Here, we quantified levels of 16 U.S. Environmental Protection Agency regulated PAHs, 3 chlorinated PAHs, and 6 brominated PAHs in nonburned forest soils and burned ash/soil samples covered with black ash (B-Ash; moderate burn intensity) or white ash (W-Ash; severe burn intensity) from the 2013 Rim Fire (1,041 km 2 ) in California. The ∑ 16 PAH concentrations follow (mean ± standard deviation; μg/kg) B-Ash (893 ± 285) > W-Ash (515 ± 333) ≈ nonburned soils (247 ± 58). Moreover, the ∑ 16 PAH profiles were altered by both moderate and severe burn conditions with the size of aromatic structures following B-Ash > W-Ash > nonburned soils. Neither chlorinated nor brominated PAH concentration was significantly elevated by moderate or severe wildfire. Overall, fire intensity is critical in regulating soil PAH concentrations and profiles. Given the high erodibility of wildfire ash, these PAHs can be easily transported to rivers and reservoirs where they could impact the aquatic food web and drinking source water.

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  1. Falay, E. O.; Altiok, A.; Kara, M.; Dumanoglu, Y.; Bayram, A.; Tolunay, D.; Elbir, T.; Odabasi, M. Spatial variation of polycyclic aromatic hydrocarbons (PAHs) in air, soil and tree components in Iskenderun industrial region, Turkey. Int. J. Chem., Environ. Biol. Sci. (IJCEBS) 2013, 1, 263-267.

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Authors
Chen, H., Chow, A. T., Li, X.-W., Ni, H.-G., Dahlgren, R. A., Zeng, H., & Wang, J.-J.
Affiliations
  • Clemson University (US)
  • Shenzhen Key Laboratory of Circular Economy, Shenzhen Graduate School, Peking University, Shenzhen 518055, China
  • Peking University (CN)
  • University of California, Davis (US)
  • Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
Corresponding author
Zeng, Hui
Venue
ACS Earth and Space Chemistry
Published
2018-10-29
Volume
2
Issue
12
Pages
1262-1270
ISSN
2472-3452 (ISSN-L)
OpenAlex
W2899352065
Cited by
76
References
51
Citations by year
2026: 14 · 2025: 13 · 2024: 10 · 2023: 8 · 2022: 13 · 2021: 7 · 2020: 8 · 2019: 3
FWCI
2.22
Type
journal article
Language
en
Open access
Locations
  • ACS Earth and Space Chemistry (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • National Institute of Food and Agriculture (SCN-2013-02784)
  • National Natural Science Foundation of China (41807360)
  • Key Laboratory of Soil and Groundwater Pollution Control of Guangdong Province, Southern University of Science and Technology (2017B030301012)
Topics
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Toxic Organic Pollutants Impact
  • Physical Sciences › Environmental Science › Global and Planetary Change › Fire effects on ecosystems
  • Physical Sciences › Environmental Science › Water Science and Technology › Environmental and Analytical Chemistry Studies
Keywords
forest fires, burn intensity, polycyclic aromatic hydrocarbons, soil contamination, black ash, white ash, soil carbon dynamics, water pollution, drinking water

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