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Characterization of the water soluble fraction in ultrafine, fine, and coarse atmospheric aerosol

Barbaro, Elena ; Feltracco, Matteo ; Cesari, Daniela ; Padoan, Sara ; Zangrando, Roberta ; Contini, Daniele ; Barbante, Carlo ; Gambaro, Andrea

The Science of the total environment, 2019-03, Vol.658, p.1423-1439 [Rivista Peer Reviewed]

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  • Titolo:
    Characterization of the water soluble fraction in ultrafine, fine, and coarse atmospheric aerosol
  • Autore: Barbaro, Elena ; Feltracco, Matteo ; Cesari, Daniela ; Padoan, Sara ; Zangrando, Roberta ; Contini, Daniele ; Barbante, Carlo ; Gambaro, Andrea
  • Editore: Netherlands: Elsevier BV
  • Diritti: 2018 Elsevier B.V.
    Copyright © 2018 Elsevier B.V. All rights reserved.
    COPYRIGHT 2019 Elsevier B.V.
  • Note di contenuto: Water soluble organic carbon significantly contributes to aerosol's carbon mass and its chemical composition is poorly characterized due to the huge number of species. In this study, we determined 94 water-soluble compounds: inorganic ions (Cl−, Br−, I−, NO3−, SO42−,K+, Mg+, Na+, NH4+, Ca2+), organic acids (methanesulfonic acid and C2-C7 carboxylic acids), monosaccharides, alcohol-sugars, levoglucosan and its isomers, sucrose, phenolic compounds, free l- and d-amino acids and photo-oxidation products of α-pinene (cis-pinonic acid and pinic acid). The sampling was conducted using a micro-orifice uniform deposit impactor (MOUDI) at the urban area of Mestre-Venice from March to May 2016. The main aim of this work is to identify the source of each detected compound, evaluating its particle size distribution. Clear differences in size distributions were observed for each class of analyzed compounds. The positive matrix factorization (PMF) model was used to identify six factors related to different sources: a) primary biogenic aerosol particles with particle size > 10 μm; b) secondary sulfate contribution; c) biomass burning; d) primary biogenic aerosol particles distributed between 10 and 1 μm; e) an aged sea salt input and f) SOA pinene. Each factor was also characterized by different composition in waters soluble compounds and different particles size distribution. [Display omitted] •Determination of 94 water soluble compounds in ultrafine, fine and coarse aerosol•Particle size distribution of l- and d-amino acids in urban aerosol•Factor analysis identified different sources for free amino acids and sugars.•Six different sources were identified with positive matrix factorization.•Each identified source had a specific particle size distribution.
  • Fa parte di: The Science of the total environment, 2019-03, Vol.658, p.1423-1439
  • Soggetti: Ions ; Free amino acids ; Phenolic compounds ; Sugars ; Particle-size distribution ; Amino acids ; Atmospheric physics ; Sulfates ; Analysis ; Monosaccharides
  • Lingua: Inglese
  • Tipo: Articolo
  • Identificativo: ISSN: 0048-9697
    EISSN: 1879-1026
    DOI: 10.1016/j.scitotenv.2018.12.298
    PMID: 30678002
  • Fonte: © ProQuest LLC All rights reserved

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