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  1. Article ; Online: Organic tracers in fine and coarse aerosols at an urban Mediterranean site: contribution of biomass burning and biogenic emissions.

    Clemente, Álvaro / Yubero, Eduardo / Nicolás, Jose F / Crespo, Javier / Galindo, Nuria

    Environmental science and pollution research international

    2024  Volume 31, Issue 17, Page(s) 25216–25226

    Abstract: The concentrations of anhydrosugars (levoglucosan, mannosan, and galactosan), polyols (inositol, xylitol, sorbitol, and mannitol), and glucose were measured in ... ...

    Abstract The concentrations of anhydrosugars (levoglucosan, mannosan, and galactosan), polyols (inositol, xylitol, sorbitol, and mannitol), and glucose were measured in PM
    MeSH term(s) Air Pollutants/analysis ; Particulate Matter/analysis ; Biomass ; Xylitol ; Aerosols/analysis ; Sorbitol ; Inositol ; Mannitol ; Environmental Monitoring/methods ; Seasons
    Chemical Substances Air Pollutants ; Particulate Matter ; Xylitol (VCQ006KQ1E) ; Aerosols ; Sorbitol (506T60A25R) ; Inositol (4L6452S749) ; Mannitol (3OWL53L36A)
    Language English
    Publishing date 2024-03-11
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-024-32789-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Changes in the concentration and composition of urban aerosols during the COVID-19 lockdown

    Clemente, Álvaro / Yubero, Eduardo / Nicolás, Jose F. / Caballero, Sandra / Crespo, Javier / Galindo, Nuria

    Environmental research. 2022 Jan., v. 203

    2022  

    Abstract: This work investigates the impact of COVID-19 restrictive measures on the mass concentrations of PM₁ and PM₁₀, and their chemical components (water-soluble ions, organic and elemental carbon, and major and trace metals) at an urban site in the western ... ...

    Abstract This work investigates the impact of COVID-19 restrictive measures on the mass concentrations of PM₁ and PM₁₀, and their chemical components (water-soluble ions, organic and elemental carbon, and major and trace metals) at an urban site in the western Mediterranean. The evolution of gaseous pollutants (NOₓ, O₃ and some volatile organic compounds) was also analyzed. The concentrations measured during the lockdown in 2020 were compared to those obtained during the same period over the preceding five years. The average decrease in the levels of NOₓ and traffic-related volatile organic compounds was higher than 50 %, while O₃ concentrations did not exhibit significant variations during the study period. Our results show that temporal variations in PM₁ and PM₁₀ concentrations were strongly affected by the frequency of Saharan dust events. When these episodes were excluded from the analysis period, a 35 % decrease in PM₁ and PM₁₀ levels was observed. Traffic restrictions during the lockdown led to important reductions in the concentrations of elemental carbon and metals derived from road dust (e.g. Ca and Fe) and break wear (e.g. Cu). Regarding secondary inorganic aerosols, nitrate showed the largest reductions as a consequence of the drop in local emissions of NOₓ.
    Keywords COVID-19 infection ; carbon ; dust ; nitrates ; research ; traffic ; volatile organic compounds ; water solubility
    Language English
    Dates of publication 2022-01
    Publishing place Elsevier Inc.
    Document type Article
    ZDB-ID 205699-9
    ISSN 1096-0953 ; 0013-9351
    ISSN (online) 1096-0953
    ISSN 0013-9351
    DOI 10.1016/j.envres.2021.111788
    Database NAL-Catalogue (AGRICOLA)

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    Zs.A 726: Show issues Location:
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  3. Article: PM10 chemical composition at a residential site in the western mediterranean: Estimation of the contribution of biomass burning from levoglucosan and its isomers

    Galindo, Nuria / Clemente, Álvaro / Yubero, Eduardo / Nicolás, Jose F / Crespo, Javier

    Environmental research. 2021 May, v. 196

    2021  

    Abstract: The composition of PM₁₀, including molecular markers of biomass burning (levoglucosan, mannosan and galactosan), was determined at a residential site in southeastern Spain during winter and early spring. The average PM₁₀ concentration was 25.0 μg m⁻³, ... ...

    Abstract The composition of PM₁₀, including molecular markers of biomass burning (levoglucosan, mannosan and galactosan), was determined at a residential site in southeastern Spain during winter and early spring. The average PM₁₀ concentration was 25.0 μg m⁻³, being organic carbon (OC, 6.77 μg m⁻³), NO₃⁻ (2.02 μg m⁻³), SO₄²⁻ (1.36 μg m⁻³) and Ca²⁺ (1.01 μg m⁻³) the main components. Levoglucosan was the dominant anhydrosugar (143 ng m⁻³), accounting for 81% of the total concentration of monosaccharide anhydrides. The average contribution of biomass combustion to OC, estimated from the levoglucosan data, was 23%. This value agreed well with that calculated by Positive Matrix Factorization (PMF, 25%). The PMF model resolved six factors that were assigned to road traffic (28%), secondary aerosols (27%), soil dust (14%), fresh sea salt (13%), aged sea salt (10%) and biomass burning (8%). This model was used to estimate the OC/Levoglucosan and PM₁₀/Levoglucosan emission ratios for the study area.
    Keywords anhydrides ; biomass ; calcium ; combustion ; dust ; models ; organic carbon ; research ; soil ; spring ; traffic ; winter ; Spain
    Language English
    Dates of publication 2021-05
    Publishing place Elsevier Inc.
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 205699-9
    ISSN 1096-0953 ; 0013-9351
    ISSN (online) 1096-0953
    ISSN 0013-9351
    DOI 10.1016/j.envres.2020.110394
    Database NAL-Catalogue (AGRICOLA)

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  4. Article ; Online: Changes in the concentration and composition of urban aerosols during the COVID-19 lockdown.

    Clemente, Álvaro / Yubero, Eduardo / Nicolás, Jose F / Caballero, Sandra / Crespo, Javier / Galindo, Nuria

    Environmental research

    2021  Volume 203, Page(s) 111788

    Abstract: This work investigates the impact of COVID-19 restrictive measures on the mass concentrations of ... ...

    Abstract This work investigates the impact of COVID-19 restrictive measures on the mass concentrations of PM
    MeSH term(s) Aerosols/analysis ; Air Pollutants/analysis ; COVID-19 ; Communicable Disease Control ; Environmental Monitoring ; Humans ; Particulate Matter/analysis ; SARS-CoV-2
    Chemical Substances Aerosols ; Air Pollutants ; Particulate Matter
    Language English
    Publishing date 2021-07-31
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 205699-9
    ISSN 1096-0953 ; 0013-9351
    ISSN (online) 1096-0953
    ISSN 0013-9351
    DOI 10.1016/j.envres.2021.111788
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: PM events and changes in the chemical composition of urban aerosols: A case study in the western Mediterranean

    Galindo, Nuria / Clemente, Álvaro / Crespo, Javier / Nicolás, Jose F / Varea, Montse / Yubero, Eduardo

    Chemosphere. 2020 Apr., v. 244

    2020  

    Abstract: More than 400 PM1 and 400 PM10 daily samples were collected in the urban center of Elche (close to the Spanish Mediterranean coast) from February 2015 to February 2018. Samples were analyzed to determine the concentrations of major and trace components ... ...

    Abstract More than 400 PM1 and 400 PM10 daily samples were collected in the urban center of Elche (close to the Spanish Mediterranean coast) from February 2015 to February 2018. Samples were analyzed to determine the concentrations of major and trace components with the aim of evaluating the influence of specific pollution events on the chemical composition of both PM fractions. The concentrations of crustal elements in PM10 significantly increased during Saharan dust outbreaks, particularly titanium, which has been identified as a good tracer of these events in the study area. Sulfate and nitrate levels were also enhanced due to secondary aerosol formation on mineral dust particles. Local pollution episodes had a great impact on submicron nitrate, whose mean concentration was more than four times higher than on non-event days. The chemical mass closure method was used to reconstruct PM1 and PM10 concentrations. Reasonably good correlations between measured and reconstructed concentrations were obtained, except for PM10 samples collected during Saharan dust events. This was due to the underestimation of the dust contribution during these episodes. Moderate differences in the average chemical composition of PM10 were observed between event and non-event days. Regarding PM1, only local pollution episodes had a certain impact on its chemical composition.
    Keywords aerosols ; case studies ; chemical composition ; dust ; nitrates ; particulates ; pollution ; sulfates ; titanium ; urban areas ; Mediterranean region
    Language English
    Dates of publication 2020-04
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 120089-6
    ISSN 1879-1298 ; 0045-6535 ; 0366-7111
    ISSN (online) 1879-1298
    ISSN 0045-6535 ; 0366-7111
    DOI 10.1016/j.chemosphere.2019.125520
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  6. Article ; Online: PM

    Galindo, Nuria / Clemente, Álvaro / Yubero, Eduardo / Nicolás, Jose F / Crespo, Javier

    Environmental research

    2020  Volume 196, Page(s) 110394

    Abstract: The composition of ... ...

    Abstract The composition of PM
    MeSH term(s) Aerosols/analysis ; Air Pollutants/analysis ; Biomass ; Environmental Monitoring ; Glucose/analogs & derivatives ; Particulate Matter/analysis ; Seasons ; Spain
    Chemical Substances Aerosols ; Air Pollutants ; Particulate Matter ; 1,6-anhydro-beta-glucopyranose (5132N17FSD) ; Glucose (IY9XDZ35W2)
    Language English
    Publishing date 2020-10-28
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 205699-9
    ISSN 1096-0953 ; 0013-9351
    ISSN (online) 1096-0953
    ISSN 0013-9351
    DOI 10.1016/j.envres.2020.110394
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

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  7. Article ; Online: PM events and changes in the chemical composition of urban aerosols: A case study in the western Mediterranean.

    Galindo, Nuria / Yubero, Eduardo / Clemente, Álvaro / Nicolás, Jose F / Varea, Montse / Crespo, Javier

    Chemosphere

    2019  Volume 244, Page(s) 125520

    Abstract: More than 400 ... ...

    Abstract More than 400 PM
    MeSH term(s) Aerosols/analysis ; Air Pollutants/analysis ; Dust/analysis ; Environmental Monitoring ; Nitrates ; Particle Size ; Particulate Matter/analysis ; Sulfates ; Trace Elements/analysis
    Chemical Substances Aerosols ; Air Pollutants ; Dust ; Nitrates ; Particulate Matter ; Sulfates ; Trace Elements
    Language English
    Publishing date 2019-11-30
    Publishing country England
    Document type Journal Article
    ZDB-ID 120089-6
    ISSN 1879-1298 ; 0045-6535 ; 0366-7111
    ISSN (online) 1879-1298
    ISSN 0045-6535 ; 0366-7111
    DOI 10.1016/j.chemosphere.2019.125520
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

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