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dc.contributor.author
Paris, R.
dc.contributor.author
Desboeufs, Karine V.
dc.contributor.author
Formenti, Paola
dc.contributor.author
Nava, Silvia
dc.contributor.author
Chou, Cédric
dc.date.accessioned
2018-09-24T10:58:08Z
dc.date.available
2017-06-08T22:55:07Z
dc.date.available
2018-09-24T10:58:08Z
dc.date.issued
2010
dc.identifier.issn
1680-7375
dc.identifier.issn
1680-7367
dc.identifier.other
10.5194/acp-10-4273-2010
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/18263
dc.identifier.doi
10.3929/ethz-b-000018263
dc.description.abstract
The chemical composition and the soluble fraction were determined in aerosol samples collected during flights of AMMA-SOP0/DABEX campaign, which were conducted in the West African Sahel during dry season (2006). Two aerosol types are encountered in this period: dust particles (DUST) and biomass burning aerosol (BB). Chemical analysis and microscope observations showed that the iron (Fe) found in BB samples mainly originates from dust particles mostly internally mixed in the biomass burning layer. Chemical analyses of samples showed that the Fe solubility is lower in African dust samples than in biomass burning aerosols. Our data provide a first idea of the variability of iron dust solubility in the source region (0.1% and 3.4%). We found a relationship between iron solubility/clay content/source which partly confirms that the variability of iron solubility in this source region is related to the character and origin of the aerosols themselves. In the biomass burning samples, no relationship were found between Fe solubility and either the concentrations of acidic species (SO42−, NO3− or oxalate) or the content of carbon (TC, OC, BC). Therefore, we were unable to determine what processes are involved in this increase of iron solubility. In terms of supply of soluble Fe to oceanic ecosystems on a global scale, the higher solubility observed for Fe in biomass burning could imply an indirect source of Fe to marine ecosystems. But these aerosols are probably not significant because the Sahara is easily the dominant source of Fe to the Atlantic Ocean.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Copernicus
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
Chemical characterisation of iron in dust and biomass burning aerosols during AMMA-SOP0/DABEX
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
dc.date.published
2010-05-06
ethz.title.subtitle
Implication for iron solubility
en_US
ethz.journal.title
Atmospheric Chemistry and Physics
ethz.journal.volume
10
en_US
ethz.journal.issue
9
en_US
ethz.journal.abbreviated
Atmos. chem. phys.
ethz.pages.start
4273
en_US
ethz.pages.end
4282
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.nebis
004294181
ethz.publication.place
Göttingen
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2017-06-08T22:55:16Z
ethz.source
ECIT
ethz.identifier.importid
imp59364c8bf17ea34605
ethz.ecitpid
pub:30380
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-12T13:50:59Z
ethz.rosetta.lastUpdated
2018-09-24T10:58:11Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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