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Source apportionment of fine aerosol at a rural background site in Central Europe based on seasonal distributions of dicarboxylic acids, sugars and related compounds

SYSNO ASEP	0573525
Document Type	A - Abstract
R&D Document Type	The record was not marked in the RIV
R&D Document Type	Není vybrán druh dokumentu
Title	Source apportionment of fine aerosol at a rural background site in Central Europe based on seasonal distributions of dicarboxylic acids, sugars and related compounds
Author(s)	Vodička, Petr (UCHP-M)_{RID, ORCID, SAI} Kawamura, K. (JP) Deshmukh, D.K. (JP) Pokorná, Petra (UCHP-M)_{ORCID, RID, SAI} Schwarz, Jaroslav (UCHP-M)_{RID, ORCID, SAI} Ždímal, Vladimír (UCHP-M)_{RID, ORCID, SAI}
Action	EGU General Assembly 2023
Event date	23.04.2023 - 28.04.2023
VEvent location	Vienna
Country	AT - Austria
Event type	EUR
Language	eng - English
Keywords	fine aerosol ; rural background site ; seasonal distributions
OECD category	Meteorology and atmospheric sciences
R&D Projects	LM2018122 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	GC20-08304J GA ČR - Czech Science Foundation (CSF)
Institutional support	UCHP-M - RVO:67985858
Annotation	Water-soluble dicarboxylic acids (hereafter diacids) and sugars are an important part of the atmospheric water-soluble organic aerosol. Here, we studied diacids and other compounds in fine aerosol particles (PM1) collected at a rural background site National Atmospheric Observatory Košetice (NAOK), Czech Republic, Central Europe. Aerosol samples were collected every second day for 24 h from September 2013 to August 2014 (n=146). Based on receptor modeling (PMF), we identified PM1 organic compounds that are more typical to anthropogenic and to biogenic sources. We have apportioned two anthropogenic sources especially evident during the heating season from mid-October to mid-April: (i) biomass burning (BB) (main contribution of levoglucosan and methylsuccinic, maleic, methylmaleic and azelaic acids) and (ii) fossil fuel combustion (FF) (represented by phthalic, terephthalic and ketomalonic acids). Furthermore, we identified two sources of biogenic aerosols: (iii) summer factor was largely characterized by compounds with three and seven carbons (malonic, 4-ketopimelic, oxoheptanoic, methylmalonic acids) while (iv) spring biogenic factor was characterized mostly by primary sugars, normal chain diacids and their precursors (oxalic, malonic, succinic, glutaric, ketomalonic, 4-oxobutanoic and 5-oxopentanoic acids). Last but not least, we distinguished (v) background factor mainly represented by less oxidized diacids precursors such as glyoxal, methylglyoxal, glyoxylic and pyruvic acids, but also by aromatic diacids, which may originate from traffic emissions; a stable and year-round source.
Workplace	Institute of Chemical Process Fundamentals
Contact	Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
Year of Publishing	2024

Number of the records: 1