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Mass Concentrations of Water-Soluble Ions in PM$_{2.5}$ Particle Fraction Measured at Urban Background Site in Croatia

Čačković, Mirjana; Šega, Krešimir; Vađić, Vladimira; Pehnec, Gordana; Gluščić, Valentina; Bešlić, Ivan

Abstract:
Mass concentrations of PM$_{2.5}$ particle fraction, water-soluble anion species (Cl$^{-}$, NO$_{3}$$^{-}$, SO$_{4}$$^{2-}$) and cation species (Na$^{+}$, NH$_{4}$$^{+}$, K$^{+}$, Mg$^{2+}$, Ca$^{2+}$) were determined, to investigated the relationship between pollutant mass concentrations, contribution of measured species to PM$_{2.5}$ mass and prediction of the pollutant sources. Daily PM$_{2.5}$ samples were taken over three years 2014 – 2016 at urban background site (UBS) in northern part of Zagreb, Croatia.

Mass concentrations of PM$_{2.5}$ particle fraction were determined by gravimetry according to the standard HRN EN 14907:2006 (EN 14907:2005) and HRN EN 12341:2014 (EN 12341:2014). Water-soluble ionic species were analysed using Thermo Scientific – ICS 5000 Capillary ion chromatography.
Annual average PM$_{2.5}$ mass concentration ranged from 19.6 μg m$^{-3}$ to 22.7μg m$^{-3}$ respectively. The annual average ion mass concentrations at UBS followed the order SO$_{4}$$^{-2}$ > NO$_{3}$$^{-}$ > NH$_{4}$$^{+}$ > K$^{+}$ > Ca$^{2+}$ > Cl$^{-}$ > Na$^{+}$ > Mg$^{2+}$, respectively, contributed from 26.5% to 31.5% to the overall PM$_{2.5}$ mass, respectively. ... mehr

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Volltext §
DOI: 10.5445/IR/1000096784
Veröffentlicht am 23.07.2019
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Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Aerosolforschung (IMK-AAF)
Publikationstyp Poster
Jahr 2019
Sprache Englisch
Identifikator KITopen-ID: 1000096784
Veranstaltung 7th International Symposium on Ultrafine Particles, Air Quality and Climate (2019), Brüssel, Belgien, 15.05.2019 – 16.05.2019
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