气候变化领域集成服务门户(CCPortal): Fossil fuel combustion; biomass burning and biogenic sources of fine carbonaceous aerosol in the Carpathian Basin

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DOI	10.5194/acp-20-4295-2020
	Fossil fuel combustion; biomass burning and biogenic sources of fine carbonaceous aerosol in the Carpathian Basin
	Salma I.; Vasanits-Zsigrai A.; Machon A.; Varga T.; Major I.; Gergely V.; Molnár M.
发表日期	2020
ISSN	1680-7316
起始页码	4295
结束页码	4312
卷号	20 期号:7
英文摘要	Fine-fraction aerosol samples were collected, and air pollutants and meteorological properties were measured in situ in the regional background environment of the Carpathian Basin, a suburban area and central part of its largest city, Budapest, in each season for a 1-year-long time interval. The samples were analysed for PM2.5 mass, organic carbon (OC), elemental carbon (EC), water-soluble OC (WSOC), radiocarbon, levoglucosan (LVG) and its stereoisomers, and some chemical elements. Carbonaceous aerosol species made up 36 % of the PM2.5 mass, with a modest seasonal variation and with a slightly increasing tendency from the regional background to the city centre (from 32 % to 39 %). A coupled radiocarbon-LVG marker method was applied to apportion the total carbon (TC = OC + EC) into contributions of EC and OC from fossil fuel (FF) combustion (ECFF and OCFF, respectively), EC and OC from biomass burning (BB) (ECBB and OCBB, respectively), and OC from biogenic sources (OCBIO). Fossil fuel combustion showed rather constant daily or monthly mean contributions (of 35 %) to the TC in the whole year in all atmospheric environments, while the daily contributions of BB and biogenic sources changed radically (from <2 % up to 70 %-85 %) at all locations and over the years. In October, the three major sources contributed equally to the TC in all environments. In January, it was the BB that was the major source, with a share of 70 % at all sites. The contributions from biogenic sources in January were the smallest. In April, FF combustion and biogenic sources were the largest two contributors at all locations with typical shares of 45 %-50 % each. In July, biogenic sources became the major source type with a monotonically increasing tendency (from 56 % to 72 %) from the city centre to the regional background. The share of BB was hardly quantifiable in July. The ECFF made up more than 90 % of EC in April and July, while in October and January, the contributions of ECBB were considerable. Biomass burning in winter and autumn offers the largest and most considerable potential for improving the air quality in cities as well as in rural areas of the Carpathian Basin. © 2020 Author(s).
语种	英语
scopus关键词	aerosol; air quality; biogenic emission; biomass burning; combustion; elemental carbon; fossil fuel; particulate matter; temporal analysis; Budapest; Carpathian Basin; Hungary
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/141420
作者单位	Institute of Chemistry, Eötvös University, Budapest, Hungary; Air Quality Reference Center, Hungarian Meteorological Service, Budapest, Hungary; Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Debrecen, Hungary
推荐引用方式 GB/T 7714	Salma I.,Vasanits-Zsigrai A.,Machon A.,et al. Fossil fuel combustion; biomass burning and biogenic sources of fine carbonaceous aerosol in the Carpathian Basin[J],2020,20(7).
APA	Salma I..,Vasanits-Zsigrai A..,Machon A..,Varga T..,Major I..,...&Molnár M..(2020).Fossil fuel combustion; biomass burning and biogenic sources of fine carbonaceous aerosol in the Carpathian Basin.Atmospheric Chemistry and Physics,20(7).
MLA	Salma I.,et al."Fossil fuel combustion; biomass burning and biogenic sources of fine carbonaceous aerosol in the Carpathian Basin".Atmospheric Chemistry and Physics 20.7(2020).