气候变化领域集成服务门户(CCPortal): Characterization of non-refractory (NR) PM1and source apportionment of organic aerosol in Kraków, Poland

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DOI	10.5194/acp-21-14893-2021
	Characterization of non-refractory (NR) PM1and source apportionment of organic aerosol in Kraków, Poland
	Tobler A.K.; Skiba A.; Canonaco F.; Močnik G.; Rai P.; Chen G.; Bartyzel J.; Zimnoch M.; Styszko K.; Nȩcki J.; Furger M.; Rózański K.; Baltensperger U.; Slowik J.G.; Prevot A.S.H.
发表日期	2021
ISSN	1680-7316
起始页码	14893
结束页码	14906
卷号	21 期号:19
英文摘要	Krakow is routinely affected by very high air pollution levels, especially during the winter months. Although a lot of effort has been made to characterize ambient aerosol, there is a lack of online and long-term measurements of nonrefractory aerosol. Our measurements at the AGH University of Science and Technology provide the online long-term chemical composition of ambient submicron particulate matter (PM1) between January 2018 and April 2019. Here we report the chemical characterization of non-refractory submicron aerosol and source apportionment of the organic fraction by positive matrix factorization (PMF). In contrast to other long-term source apportionment studies, we let a small PMF window roll over the dataset instead of performing PMF over the full dataset or on separate seasons. In this way, the seasonal variation in the source profiles can be captured. The uncertainties in the PMF solutions are addressed by the bootstrap resampling strategy and the random a-value approach for constrained factors. We observe clear seasonal patterns in the concentration and composition of PM1, with high concentrations during the winter months and lower concentrations during the summer months. Organics are the dominant species throughout the campaign. Five organic aerosol (OA) factors are resolved, of which three are of a primary nature (hydrocarbon-like OA (HOA), biomass burning OA (BBOA) and coal combustion OA (CCOA)) and two are of a secondary nature (more oxidized oxygenated OA (MO-OOA) and less oxidized oxygenated OA (LO-OOA)). While HOA contributes on average 8.6%±2.3% throughout the campaign, the solid-fuelcombustion- related BBOA and CCOA show a clear seasonal trend with average contributions of 10.4%±2.7% and 14.1%, ±2.1%, respectively. Not only BBOA but also CCOA is associated with residential heating because of the pronounced yearly cycle where the highest contributions are observed during wintertime. Throughout the campaign, the OOA can be separated into MO-OOA and LO-OOA with average contributions of 38.4%±8.4% and 28.5%±11.2%, respectively. © Author(s) 2021.
语种	英语
scopus关键词	aerosol; atmospheric pollution; chemical composition; organic compound; particulate matter; source apportionment; trend analysis; Cracow; Malopolskie; Poland [Central Europe]
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246525
作者单位	Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, Villigen, 5232, Switzerland; Datalystica Ltd., Park innovAARE, Villigen, 5234, Switzerland; Department of Applied Nuclear Physics, Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Kraków, Poland; Condensed Matter Physics Department, JoA 3/4ef Stefan Institute, Ljubljana, Slovenia; Center for Atmospheric Research, University of Nova Gorica, Ajdovščina, Slovenia; Department of Coal Chemistry and Environmental Sciences, Faculty of Energy and Fuels, AGH University of Science and Technology, Kraków, Poland
推荐引用方式 GB/T 7714	Tobler A.K.,Skiba A.,Canonaco F.,et al. Characterization of non-refractory (NR) PM1and source apportionment of organic aerosol in Kraków, Poland[J],2021,21(19).
APA	Tobler A.K..,Skiba A..,Canonaco F..,Močnik G..,Rai P..,...&Prevot A.S.H..(2021).Characterization of non-refractory (NR) PM1and source apportionment of organic aerosol in Kraków, Poland.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(19).
MLA	Tobler A.K.,et al."Characterization of non-refractory (NR) PM1and source apportionment of organic aerosol in Kraków, Poland".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.19(2021).