气候变化领域集成服务门户(CCPortal): Wildfires and wood stoves: Woodsmoke toxicity and chemical characterization study in the north-western United States

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DOI	10.1016/j.atmosenv.2021.118347
	Wildfires and wood stoves: Woodsmoke toxicity and chemical characterization study in the north-western United States
	Hadley O.; Cutler A.; Schumaker R.; Bond R.
发表日期	2021
ISSN	1352-2310
卷号	253
英文摘要	PM2.5 is the most monitored air pollutant for which EPA has set national ambient air quality standards (NAAQS). As such, it is the pollutant on which the Air Quality Index (AQI) is most often based. PM2.5 and PM10 are the only criteria pollutant whose composition, and therefore toxicity varies. The PM2.5 AQI does not account for chemical composition. In areas where woodsmoke is the dominant PM2.5 source, coemitted hazardous air pollutants (HAPs) could impact community health differently than indicated by PM2.5 based AQI. PM2.5, carbon monoxide (CO), and particle light absorption were measured continuously from August 2018 through May 2019 in a suburban community where woodsmoke contributed the majority of ambient PM2.5. Air samples were also collected at least every 6 days at the site and analyzed for a suite of hazardous air pollutants (HAPs). EPA's positive matrix factorization (PMF) model 5.0 was used to identify the primary source contributors to local air pollution and apportion what fraction of each pollutant was from woodsmoke. Both measurements and the PMF model result showed significant chemical distinction between wood stove and wildfire smoke. Wildfire smoke contained significantly less CO and organic compounds than wood stove smoke relative to measured PM2.5. Comparing select HAPs to ambient CO concentration indicated atmospheric oxidation depleted PAHs in the wildfire smoke, although the relative amount of UV absorbing organic carbon did not change. HAPs most strongly associated with wood combustion were assessed relative to their individual cancerous and non-cancerous screening levels, as well as the PM2.5 and CO NAAQS. © 2021 Elsevier Ltd
关键词	Hazardous air pollutants Positive matrix factorization Woodsmoke toxicity
语种	英语
scopus关键词	Air quality; Air quality standards; Carbon monoxide; Factorization; Hazards; Matrix algebra; Organic carbon; Smoke; Water quality; Wood; Air quality indices; Ambients; Hazardous air pollutants; National ambient air quality standards; Organics; Positive Matrix Factorization; Positive matrix factorization models; Wildfire smoke; Woodsmoke toxicity; Woodstove; Toxicity; benzene; black carbon; carbon monoxide; naphthalene; organic carbon; organic compound; ozone; polycyclic aromatic hydrocarbon; aerosol composition; air quality; ambient air; atmospheric pollution; chemical analysis; cooking appliance; pollutant source; pollution monitoring; smoke; toxicity; wildfire; air pollutant; air pollution; air quality; air sampling; ambient air; Article; cancer risk; chemical composition; combustion; dangerous goods; health hazard; human; light absorption; particulate matter; particulate matter 2.5; plume; priority journal; public health; signal noise ratio; smoke; toxicity; United States; wildfire; wood; United States
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248485
作者单位	Olympic Region Clean Air Agency, Olympia, WA, United States; The Evergreen State College, Olympia, WA, United States
推荐引用方式 GB/T 7714	Hadley O.,Cutler A.,Schumaker R.,et al. Wildfires and wood stoves: Woodsmoke toxicity and chemical characterization study in the north-western United States[J],2021,253.
APA	Hadley O.,Cutler A.,Schumaker R.,&Bond R..(2021).Wildfires and wood stoves: Woodsmoke toxicity and chemical characterization study in the north-western United States.ATMOSPHERIC ENVIRONMENT,253.
MLA	Hadley O.,et al."Wildfires and wood stoves: Woodsmoke toxicity and chemical characterization study in the north-western United States".ATMOSPHERIC ENVIRONMENT 253(2021).