气候变化领域集成服务门户(CCPortal): Sources and processes that control the submicron organic aerosol composition in an urban Mediterranean environment (Athens): A high temporal-resolution chemical composition measurement study

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DOI	10.5194/acp-19-901-2019
	Sources and processes that control the submicron organic aerosol composition in an urban Mediterranean environment (Athens): A high temporal-resolution chemical composition measurement study
	Stavroulas I.; Bougiatioti A.; Grivas G.; Paraskevopoulou D.; Tsagkaraki M.; Zarmpas P.; Liakakou E.; Gerasopoulos E.; Mihalopoulos N.
发表日期	2019
ISSN	16807316
起始页码	901
结束页码	919
卷号	19 期号:2
英文摘要	Submicron aerosol chemical composition was studied during a year-long period (26 July 2016-31 July 2017) and two wintertime intensive campaigns (18 December 2013-21 February 2014 and 23 December 2015-17 February 2016), at a central site in Athens, Greece, using an Aerosol Chemical Speciation Monitor (ACSM). Concurrent measurements included a particle-into-liquid sampler (PILS-IC), a scanning mobility particle sizer (SMPS), an AE-33 Aethalometer, and ion chromatography analysis on 24 or 12h filter samples. The aim of the study was to characterize the seasonal variability of the main submicron aerosol constituents and decipher the sources of organic aerosol (OA). Organics were found to contribute almost half of the submicron mass, with 30min resolution concentrations during wintertime reaching up to 200μgm-3. During winter (all three campaigns combined), primary sources contributed about 33% of the organic fraction, and comprised biomass burning (10%), fossil fuel combustion (13%), and cooking (10%), while the remaining 67% was attributed to secondary aerosol. The semi-volatile component of the oxidized organic aerosol (SV-OOA; 22%) was found to be clearly linked to combustion sources, in particular biomass burning; part of the very oxidized, low-volatility component (LV-OOA; 44%) could also be attributed to the oxidation of emissions from these primary combustion sources. These results, based on the combined contribution of biomass burning organic aerosol (BBOA) and SV-OOA, indicate the importance of increased biomass burning in the urban environment of Athens as a result of the economic recession. During summer, when concentrations of fine aerosols are considerably lower, more than 80% of the organic fraction is attributed to secondary aerosol (SV-OOA 31% and LV-OOA 53%). In contrast to winter, SV-OOA appears to result from a well-mixed type of aerosol that is linked to fast photochemical processes and the oxidation of primary traffic and biogenic emissions. Finally, LV-OOA presents a more regional character in summer, owing to the oxidation of OA over the period of a few days. © Author(s) 2019.
语种	英语
scopus关键词	aerosol; biomass burning; chemical composition; chromatography; particle size; urban area; Athens [Attica]; Attica; Greece; Mediterranean Region
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/144701
作者单位	Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Crete, 71003, Greece; Energy Environment and Water Research Center, Cyprus Institute, Nicosia, 2121, Cyprus; Institute for Environmental Research and Sustainable Development, National Observatory of Athens, Lofos Koufou, P. Penteli, Athens, 15236, Greece; School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332, United States
推荐引用方式 GB/T 7714	Stavroulas I.,Bougiatioti A.,Grivas G.,et al. Sources and processes that control the submicron organic aerosol composition in an urban Mediterranean environment (Athens): A high temporal-resolution chemical composition measurement study[J],2019,19(2).
APA	Stavroulas I..,Bougiatioti A..,Grivas G..,Paraskevopoulou D..,Tsagkaraki M..,...&Mihalopoulos N..(2019).Sources and processes that control the submicron organic aerosol composition in an urban Mediterranean environment (Athens): A high temporal-resolution chemical composition measurement study.Atmospheric Chemistry and Physics,19(2).
MLA	Stavroulas I.,et al."Sources and processes that control the submicron organic aerosol composition in an urban Mediterranean environment (Athens): A high temporal-resolution chemical composition measurement study".Atmospheric Chemistry and Physics 19.2(2019).