气候变化领域集成服务门户(CCPortal): Source analysis of heavy metal elements of PM2.5 in canteen in a university in winter

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DOI	10.1016/j.atmosenv.2020.117879
	Source analysis of heavy metal elements of PM2.5 in canteen in a university in winter
	Niu Y.; Wang F.; Liu S.; Zhang W.
发表日期	2021
ISSN	1352-2310
卷号	244
英文摘要	Indoor air particulate samples were collected in the first floor of the Xingyuan canteen of Nanjing University of Science and Technology (NJUST) in Nanjing during the winter season. Meanwhile, outdoor air particulate samples were collected on the roof of a building that is 28 m away from the canteen. The mean PM2.5 (fine particulate matter) concentrations of the indoor and outdoor samples were found to be 99.43 and 103.09 μg/m3, respectively. Through correlation analysis, it was found that more than half of the PM2.5 penetrates from the adjacent outdoor area into the canteen. Inductively coupled plasma optical emission spectrometry (ICP-OES) was used to determine the concentration of heavy metals (As, Cd, Cr, Cu, Fe, Mn, Ni, Pb, Zn) in the PM2.5, revealing that the concentration of As, Mn and Cd in the canteen exceeded health standards. Positive Matrix Factorization (PMF) was used to identify the pollution sources of the PM2.5-related heavy metals in the canteen, revealing the following sources in descending order: cooking (34.7%), fuel combustion (28.9%), canteen kitchenware (14.4%), transportation (9.6%), indoor building materials (8%) and the Earth's crust (4.4%). Enrichment factor analysis revealed the source of the excessive As in the canteen to be the outdoor air and the cooking of a large amount of meat in the canteen. The outdoor air contained excessive As and infiltrated the canteen. In addition, the Earth's crust was found to be the source of excessive Mn in the canteen, while transportation was the cause of excessive Cd. © 2020 Elsevier Ltd
关键词	Canteen heavy metal PM2.5 PMF Source apportionment
语种	英语
scopus关键词	Air quality; Factorization; Fuels; Heavy metals; Inductively coupled plasma; Materials handling; Optical emission spectroscopy; Particles (particulate matter); Structural geology; Thermal processing (foods); Correlation analysis; Enrichment factors; Fine particulate matter; Heavy metal elements; Inductively coupled plasma-optical emission spectrometry; Pollution sources; Positive Matrix Factorization; Science and Technology; Metal analysis; arsenic; cadmium; chromium; copper; fuel; heavy metal; iron; lead; manganese; nickel; zinc; air transportation; anthropogenic source; heavy metal; particulate matter; pollutant transport; roof; seasonality; university sector; air and air related phenomena; air pollution; air sampling; ambient air; Article; combustion; cooking; correlation analysis; factor analysis; human; inductively coupled plasma mass spectrometry; kitchen; limit of detection; maximum concentration; meat; particulate matter 2.5; positive matrix factorization; priority journal; traffic and transport; university; winter; Nanjing [Jiangsu]
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/248866
作者单位	MllT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; Nanjing University, Yancheng Academy of Environmental Protection Technology and Engineering, China
推荐引用方式 GB/T 7714	Niu Y.,Wang F.,Liu S.,et al. Source analysis of heavy metal elements of PM2.5 in canteen in a university in winter[J],2021,244.
APA	Niu Y.,Wang F.,Liu S.,&Zhang W..(2021).Source analysis of heavy metal elements of PM2.5 in canteen in a university in winter.ATMOSPHERIC ENVIRONMENT,244.
MLA	Niu Y.,et al."Source analysis of heavy metal elements of PM2.5 in canteen in a university in winter".ATMOSPHERIC ENVIRONMENT 244(2021).