气候变化领域集成服务门户(CCPortal): Exploration of PM mass, source, and component-related factors that might explain heterogeneity in daily PM2.5-mortality associations across the United States

CCPortal

DOI	10.1016/j.atmosenv.2021.118650
	Exploration of PM mass, source, and component-related factors that might explain heterogeneity in daily PM2.5-mortality associations across the United States
	Rappazzo K.M.; Baxter L.; Sacks J.D.; Alman B.L.; Peterson G.C.L.; Hubbell B.; Neas L.
发表日期	2021
ISSN	1352-2310
卷号	262
英文摘要	Multi-city epidemiologic studies examining short-term (daily) differences in fine particulate matter (PM2.5) provide evidence of substantial spatial heterogeneity in city-specific mortality risk estimates across the United States. Because PM2.5 is a mixture of particles, both directly emitted from sources or formed through atmospheric reactions, some of this heterogeneity may be due to regional variations in PM2.5 toxicity. Using inverse variance weighted linear regression, we examined change in percent change in mortality in association with 24 “exposure” determinants representing three basic groupings based on potential explanations for differences in PM toxicity – size, source, and composition. Percent changes in mortality for the PM2.5-mortality association for 313 core-based statistical areas and their metropolitan divisions over 1999–2005 were used as the outcome. Several determinants were identified as potential contributors to heterogeneity: all mass fraction determinants, vehicle miles traveled (VMT) for diesel total, VMT gas per capita, PM2.5 ammonium, PM2.5 nitrate, and PM2.5 sulfate. In multivariable models, only daily correlation of PM2.5 with PM10 and long-term average PM2.5 mass concentration were retained, explaining approximately 10% of total variability. The results of this analysis contribute to the growing body of literature specifically focusing on assessing the underlying basis of the observed spatial heterogeneity in PM2.5-mortality effect estimates, continuing to demonstrate that this heterogeneity is multifactorial and not attributable to a single aspect of PM. © 2021
关键词	Air pollution Components Heterogeneity Mortality Particulate matter
语种	英语
scopus关键词	Air pollution; Particle size analysis; Petroleum prospecting; Sulfur compounds; Component; Heterogeneity; Mass components; Mass sources; Mortality; Particulate Matter; PM$-2.5$; Related factors; Spatial heterogeneity; Vehicle-miles traveled; Toxicity; concentration (composition); epidemiology; heterogeneity; mortality risk; particulate matter; pollutant source; spatiotemporal analysis; toxicity; article; clinical article; human; linear regression analysis; mortality; particulate matter 10; particulate matter 2.5; United States; 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/248277
作者单位	U.S. Environmental Protection Agency, Office of Research and Development, Research Triangle ParkNC, United States
推荐引用方式 GB/T 7714	Rappazzo K.M.,Baxter L.,Sacks J.D.,et al. Exploration of PM mass, source, and component-related factors that might explain heterogeneity in daily PM2.5-mortality associations across the United States[J],2021,262.
APA	Rappazzo K.M..,Baxter L..,Sacks J.D..,Alman B.L..,Peterson G.C.L..,...&Neas L..(2021).Exploration of PM mass, source, and component-related factors that might explain heterogeneity in daily PM2.5-mortality associations across the United States.ATMOSPHERIC ENVIRONMENT,262.
MLA	Rappazzo K.M.,et al."Exploration of PM mass, source, and component-related factors that might explain heterogeneity in daily PM2.5-mortality associations across the United States".ATMOSPHERIC ENVIRONMENT 262(2021).