Positive matrix factorization of seasonally resolved organic aerosol at three different Central European background sites based on nuclear magnetic resonance Aerosolomics data

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F24%3A00581636" target="_blank" >RIV/67985858:_____/24:00581636 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0349747" target="_blank" >https://hdl.handle.net/11104/0349747</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.scitotenv.2024.170303" target="_blank" >10.1016/j.scitotenv.2024.170303</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Positive matrix factorization of seasonally resolved organic aerosol at three different Central European background sites based on nuclear magnetic resonance Aerosolomics data

Popis výsledku v původním jazyce

Concentration data derived from 1 14 H NMR analysis of the water-soluble organic compounds from fine aerosol (PM2.5) at three Central European background stations, Košetice, Frýdlant (both in the Czech Republic), and Melpitz (Germany), were used for detailed source apportionment analysis. Two winter and two summer episodes (year 2021) with higher organic concentrations and similar wind directions were selected for NMR analyses. The concentration profiles of 61 water-soluble organic compounds were determined by NMR Aerosolomics and a principal component analysis (PCA) was performed on this dataset. Based on the PCA results, 23 compounds were selected for positive matrix factorization (PMF) analysis in order to identify dominant aerosol sources at rural background sites in Central Europe. Both the PCA and the subsequent PMF analyses clearly distinguished the characteristics of winter and summer aerosol particles. In summer, four factors were identified from PMF and were associated with biogenic aerosol (61-78%), background aerosol (9-15%), industrial biomass combustion (7-13%), and residential heating (5-13%). In winter, only 3 factors were identified - industrial biomass combustion (33-49%), residential heating (37-45%) and a background aerosol (8-30%). The main difference was observed in the winter season with a stronger contribution of emissions from industrial biomass burning at the Czech stations Košetice and Frýdlant (47-49%) compared to the Melpitz station (33%). However, in general, there were negligible differences in identified sources between stations in the given seasons, indicating a n31 certain homogeneity in PM2.5 composition within Central Europe at least during the sampling periods.

Název v anglickém jazyce

Positive matrix factorization of seasonally resolved organic aerosol at three different Central European background sites based on nuclear magnetic resonance Aerosolomics data

Popis výsledku anglicky

Concentration data derived from 1 14 H NMR analysis of the water-soluble organic compounds from fine aerosol (PM2.5) at three Central European background stations, Košetice, Frýdlant (both in the Czech Republic), and Melpitz (Germany), were used for detailed source apportionment analysis. Two winter and two summer episodes (year 2021) with higher organic concentrations and similar wind directions were selected for NMR analyses. The concentration profiles of 61 water-soluble organic compounds were determined by NMR Aerosolomics and a principal component analysis (PCA) was performed on this dataset. Based on the PCA results, 23 compounds were selected for positive matrix factorization (PMF) analysis in order to identify dominant aerosol sources at rural background sites in Central Europe. Both the PCA and the subsequent PMF analyses clearly distinguished the characteristics of winter and summer aerosol particles. In summer, four factors were identified from PMF and were associated with biogenic aerosol (61-78%), background aerosol (9-15%), industrial biomass combustion (7-13%), and residential heating (5-13%). In winter, only 3 factors were identified - industrial biomass combustion (33-49%), residential heating (37-45%) and a background aerosol (8-30%). The main difference was observed in the winter season with a stronger contribution of emissions from industrial biomass burning at the Czech stations Košetice and Frýdlant (47-49%) compared to the Melpitz station (33%). However, in general, there were negligible differences in identified sources between stations in the given seasons, indicating a n31 certain homogeneity in PM2.5 composition within Central Europe at least during the sampling periods.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10509 - Meteorology and atmospheric sciences

Projekt

<a href="/cs/project/GC20-08304J" target="_blank" >GC20-08304J: Transport a přeměna atmosférického aerosolu v rámci střední Evropy s důrazem na antropogenní zdroje</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Science of the Total Environment

ISSN

0048-9697

e-ISSN

1879-1026

Svazek periodika

916

Číslo periodika v rámci svazku

15 March

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

18

Strana od-do

170303

Kód UT WoS článku

001173751500001

EID výsledku v databázi Scopus

2-s2.0-85183951946