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Passive monitoring of particulate matter and gaseous pollutants in Fogo Island, Cape Verde

2018-12Journal article Open access
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dc.contributor.authorAlves, Célia
dc.contributor.authorCandeias, Carla
dc.contributor.authorNunes, Teresa
dc.contributor.authorTomé, Mário
dc.contributor.authorVicente, Estela
dc.contributor.authorÁvila, Paula Freire
dc.contributor.authorRocha, Fernando
dc.date.accessioned2022-04-05T15:00:20Z
dc.date.available2022-04-05T15:00:20Z
dc.date.issued2018-12
dc.description.abstractABSTRACT: An air quality monitoring campaign by passive sampling techniques was carried out, for the first time, between November 2016 and January 2017 on the Cape Verdean island of Fogo, whose volcanic mountain rises up to 2829 m. Levels of SO2 and acid gases (HF, HCl, HNO3, H2SO4 and H3PO4) were, in most cases, below the detection limits. Alkylpentanes, hexane, cycloalkanes and toluene were the dominant volatile organic compounds. The m,p-xylene/ethylbenzene ratios revealed that air masses arriving at Cape Verde have been subjected to significant aging processes. High toluene/benzene ratios suggested extra sources of toluene in addition to vehicle emissions. Deposition rates of total settleable dust ranged from 23 to 155 mg/m(2)/day. On average, organic carbon accounted for 15.6% of the dust mass, whereas elemental carbon was generally undetected. Minerals comprised the dominant mass fraction. The dust levels were mostly affected by two main airflows: the westerlies and the Saharan Air Layer. These air masses contributed to the transport of mineral dust from desert regions, secondary inorganic constituents (SO42-, NO3- and NH4+) and tracers of biomass burning emissions, such as potassium. Sea salt represented 12% of the mass of settleable dust. Scanning electron microscope observations of several particles with different compositions, shapes and sizes revealed high silica mass fractions in all samples, as well as variable contents of carbonates, sulphates, aluminosilicates, Fe, Ti, F and NaCl, suggesting that, in addition to the already mentioned sources, dust is likely linked to industrial emissions in the northern and north-western coast of the African continent. Although some atmospheric constituents presented higher concentrations near the crater, the small fumarolic activity still present after cessation of the eruption in February 2015 has a limited impact on air quality, which is most affected by long range transport and some local sources at specific locations.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationAlves, Célia... [et.al.] - Passive monitoring of particulate matter and gaseous pollutants in Fogo Island, Cape Verde. In: Atmospheric Research, 2018, Vol. 214, pp. 250-262pt_PT
dc.identifier.doi10.1016/j.atmosres.2018.08.002pt_PT
dc.identifier.eissn1873-2895
dc.identifier.issn0169-8095
dc.identifier.urihttp://hdl.handle.net/10400.9/3820
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationFIRE - PTDC/GEO-GEO/1123/2014pt_PT
dc.relationChemical fingerprinting and toxicity of particulate matter from indoor sources
dc.relation.publisherversionhttps://doi.org/10.1016/j.atmosres.2018.08.002pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectFogo volcanopt_PT
dc.subjectDust depositionpt_PT
dc.subjectAcid gasespt_PT
dc.subjectIonspt_PT
dc.subjectEnvironmental impactpt_PT
dc.subjectRisk assessmentpt_PT
dc.titlePassive monitoring of particulate matter and gaseous pollutants in Fogo Island, Cape Verdept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleChemical fingerprinting and toxicity of particulate matter from indoor sources
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F117993%2F2016/PT
oaire.citation.endPage262pt_PT
oaire.citation.startPage250pt_PT
oaire.citation.titleAtmospheric Researchpt_PT
oaire.citation.volume214pt_PT
person.familyNameCandeias
person.familyNameÁvila
person.familyNameRocha
person.givenNameCarla
person.givenNamePaula
person.givenNameFernando
person.identifier.ciencia-idD912-6FC4-79CC
person.identifier.ciencia-id6F13-70A2-3998
person.identifier.orcid0000-0001-6664-8545
person.identifier.orcid0000-0002-4080-0737
person.identifier.orcid0000-0002-3636-3933
person.identifier.ridA-2521-2014
person.identifier.ridB-2774-2014
person.identifier.ridA-4532-2009
person.identifier.scopus-author-id37062910200
person.identifier.scopus-author-id8626859600
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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