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Cited by 20Atmospheric chemistry and aerosolsAtmospheric aerosols and cloudsMarine Plankton and Biogeochemistry

The DOI matches its Crossref record.

Size distribution of atmospheric particulate ionic species at a coastal site in Portugal

Open access
Alves, Célia, Pio, Casimiro, Campos, Eduarda, Barbedo, Patrícia·2007·Química Nova
DOI 10.1590/s0100-40422007000800027
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Abstract

A Berner impactor was used to collect size-differentiated aerosol samples from March to August 2003 in the city of Aveiro, on the Portuguese west coast. The samples were analysed for the main water-soluble ion species. The average concentration of sulphate, nitrate, chloride and ammonium was 6.38, 3.09, 1.67 and 1.27 µg m-3, respectively. The results show that SO4(2-) and NH4+ were consistently present in the fine fraction < 1 µm, which represents, on average, 72 and 89% of their total atmospheric concentrations, respectively. The NO3-particles were concentrated in the coarse size. Chloride presented the characteristic coarse mode for marine aerosols. During some spring/summer events, an ammonium surplus was observed (NH4+/SO4(2-) molar ratios > 2), possibly due to greater availability of ammonia coming from agricultural activities or from the neighbouring chemical industrial complex. During the remaining periods, the aerosol was found to be somewhat acidic and predominantly in the form of ammonium bisulphate (NH4+/SO4(2-) molar ratios = 0.5-1.25). Samples collected under a major or exclusive influence of maritime air masses were essentially constituted by coarse particles with enrichment in sea salt, while for air masses of continental origin the contribution of water-soluble ionic species in the fine mode was more pronounced.

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  • The indoor neutralisation process produced a mixture of (NH4)2SO4 and (NH4)3H(SO4)2.

    “point out that the neutralisation process produced a mixture of (NH 4 ) 2 SO 4 and (NH 4 ) 3 H(SO 4 ) 2 (Alves et al., 2007).”

    From Comfort Parameters and Particulate Matter (PM10 and PM2.5) in School Classrooms and Outdoor Air (2013) · cites this paper as Alves et al., 2007

    In the section headed “Figure 1. Temporal variation of meteorological parameters, particulate matter and ionic species” (page unavailable), the paper says ammonium bisulphate and letovicite can coexist at one molar-ratio range, while ammonium sulphate predominates at another. Its Aveiro measurements concern outdoor atmospheric aerosol, not an indoor neutralisation process producing the claimed mixture. (LLM, conf=0.80)

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Metadata

Authors
Alves, C., Pio, C., Campos, E., & Barbedo, P.
Affiliations
Centro de Estudos do Ambiente e do Mar (PT)
Corresponding author
Alves, Célia
ORCID
Venue
Química Nova
Publisher
FapUNIFESP (SciELO)
Published
2007
Volume
30
Issue
8
Pages
1938-1944
ISSN
0100-4042 (ISSN-L)
DOI
10.1590/s0100-40422007000800027
OpenAlex
W2153617317
Cited by
20
References
0
Citations by year
2024: 2 · 2023: 1 · 2021: 1 · 2020: 4 · 2019: 1 · 2018: 1 · 2016: 2 · 2015: 2 · 2014: 2 · 2013: 1 · 2012: 2
FWCI
0.20
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • Química Nova (publishedVersion, cc-by-nc)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (publishedVersion, other-oa)
  • Americanae (AECID Library) (submittedVersion, cc-by-nc)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Atmospheric chemistry and aerosols
  • Physical Sciences › Environmental Science › Global and Planetary Change › Atmospheric aerosols and clouds
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine Plankton and Biogeochemistry
Keywords
atmospheric aerosols, aerosol size distribution, water-soluble ions, sulfate, nitrate, chloride, ammonium, sea salt, marine aerosols, aerosol acidity, maritime air masses, coastal atmosphere, Aveiro

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