气候变化领域集成服务门户(CCPortal): Elemental composition of indoor and outdoor coarse particulate matter at an inner-city high school

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DOI	10.1016/j.atmosenv.2021.118559
	Elemental composition of indoor and outdoor coarse particulate matter at an inner-city high school
	Williamson K.; Das S.; Ferro A.R.; Chellam S.
发表日期	2021
ISSN	1352-2310
卷号	261
英文摘要	Paired PM10 and fine particulate matter (PM2.5) samples were collected indoor and outdoor at a fully mechanically ventilated high school in the ultraindustrialized ship channel region of Houston, Texas over a two-month period. The primary foci of this research are to measure the elemental composition of ambient outdoor and indoor coarse particulate matter (PM10-2.5), characterize aerosol infiltration/ventilation, and obtain clues to their origins. Several metallic hazardous air pollutants were detected inside the school but at concentrations lower than even the most rigorous indoor air quality benchmarks. Only chromium may have potentially posed a hazard based on indoor air quality standards set by the California Environmental Protection Agency. Indoor-to-outdoor (I/O) mass abundance ratios for some metals (Li, Be, Si, Ti, Cr, Co, Ni, Zn, As, Se, Zr, Cd, Sn, Sb, Hf, and Pb) were significantly greater than 1 in PM10-2.5, suggesting corresponding indoor sources in the PM10-2.5 size range. Some other metals (Al, K, Ca, V, Mn, Fe, Cu, Ga, Rb, Sr, Y, Mo, Ce, Pr, Nd, Sm, Gd, Dy, Yb, and U) in PM10-2.5 had I/O ratios close to one suggesting they had predominantly outdoor origins. Enrichment factors of several metals including light rare earths (e.g. Cu, Sb, Pb, Mo, Cd, La, Ce, Pr, Nd, and Sm) with respect to local soil were overall the highest both indoors and outdoors, illustrating their anthropogenic origins. Several lines of evidence including light lanthanoid ratios, simultaneous La–Ce-Sm variations (ternary diagrams), and correlations with cracking catalysts indicated that petroleum refineries are principally responsible for the elevated lanthanoid concentrations. Rare earth element analysis revealed shifts between transient catalyst releases from petroleum refining operations and windblown soil resuspension as their dominant sources. © 2021 Elsevier Ltd
关键词	Children's exposure Indoor air quality Metals PM10-2.5 Rare earth elements Urban aerosols
语种	英语
scopus关键词	Aerosols; Air quality; Air quality standards; Benchmarking; Catalysts; Environmental Protection Agency; Gasoline; Hazards; Indoor air pollution; Petroleum refineries; Quality assurance; Child exposure; Coarse particulate matter; Elemental compositions; Higher School; Indoor air quality; Indoor-to-outdoor; PM$-10$; PM10-2.5; Rare-earths; Urban aerosols; Rare earth elements; aluminum; antimony; arsenic; beryllium; cadmium; calcium; cerium; chromium; cobalt; copper; dysprosium; gadolinium; gallium; iron; lanthanide; lanthanum; lead; lithium; manganese; molybdenum; neodymium; nickel; potassium; praseodymium; rubidium; samarium; selenium; silicon; strontium; tin; titanium; uranium; vanadium; ytterbium; yttrium; zinc; aerosol; air quality; catalyst; chemical composition; chromium; correlation; cracking (chemistry); indoor air; particulate matter; rare earth element; air pollutant; air quality; Article; catalyst; controlled study; high school; human; indoor air pollution; limit of detection; particulate matter 10; particulate matter 2.5; petrochemical industry; school; soil; time series analysis; Houston County [Texas]; Texas; 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/248334
作者单位	Department of Civil & Environmental Engineering, Texas A&M University, College Station, TX 77843, United States; Department of Civil & Environmental Engineering, Clarkson University, Potsdam, NY 13699, United States; Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, United States
推荐引用方式 GB/T 7714	Williamson K.,Das S.,Ferro A.R.,et al. Elemental composition of indoor and outdoor coarse particulate matter at an inner-city high school[J],2021,261.
APA	Williamson K.,Das S.,Ferro A.R.,&Chellam S..(2021).Elemental composition of indoor and outdoor coarse particulate matter at an inner-city high school.ATMOSPHERIC ENVIRONMENT,261.
MLA	Williamson K.,et al."Elemental composition of indoor and outdoor coarse particulate matter at an inner-city high school".ATMOSPHERIC ENVIRONMENT 261(2021).