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Determination of PM1 sources at a Prague background site using PMF analysis of combined aerosol mass spectra.
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SYSNO ASEP 0549879 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Determination of PM1 sources at a Prague background site using PMF analysis of combined aerosol mass spectra. Author(s) Makeš, Otakar (UCHP-M) RID, ORCID, SAI
Schwarz, Jaroslav (UCHP-M) RID, ORCID, SAI
Vodička, Petr (UCHP-M) RID, ORCID, SAI
Engling, G. (TW)
Ždímal, Vladimír (UCHP-M) RID, ORCID, SAIArticle number 20 Source Title Atmosphere. - : MDPI
Roč. 13, č. 1 (2022)Number of pages 21 s. Language eng - English Country CH - Switzerland Keywords NR-PM1 ; atmospheric aerosol ; source apportionment Subject RIV DG - Athmosphere Sciences, Meteorology OECD category Meteorology and atmospheric sciences R&D Projects LM2018122 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LTC18068 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GAP209/11/1342 GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support UCHP-M - RVO:67985858 UT WOS 000756939000001 EID SCOPUS 85121831678 DOI 10.3390/atmos13010020 Annotation Two intensive measurement campaigns using a compact time-of-flight aerosol mass spectrometer were carried out at the suburban site in Prague (Czech Republic) in summer (2012) and winter (2013). The aim was to determine the aerosol sources of the NR-PM1 fraction by PMF analysis of organic (OA) and inorganic aerosol mass spectra. Firstly, an analysis of the OA mass spectra was performed. Hydrocarbon-like OA (HOA), biomass burning OA (BBOA), and two types of oxygenated OA (OOA1) and (OOA2) were identified in summer. In winter, HOA, BBOA, long-range oxygenated OA (LROOA), and local oxygenated OA (LOOA) were determined. The identified HOA and BBOA factors were then used as additional input for the subsequent ME-2 analysis of the combined organic and inorganic spectra. This analysis resulted in six factors in both seasons. All of the previously reported organic factors were reidentified and expanded with the inorganic part of the spectra in both seasons. Two predominantly inorganic factors ammonium sulphate (AMOS) and ammonium nitrate (AMON) were newly identified in both seasons. Despite very similar organic parts of the mass profiles, the daily cycles of HOA and LOOA differed significantly in winter. It appears that the addition of the inorganic part of the mass profile, in some cases, reduces the ability of the model to identify physically meaningful factors. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2023 Electronic address https://www.mdpi.com/2073-4433/13/1/20
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