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hal.structure.identifierDivision of Waste Science and Technology
dc.contributor.authorKUMPIENE, Jurate
hal.structure.identifierEnvironmental Sciences Department
dc.contributor.authorFITTS, Jeffrey P.
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorMENCH, Michel
dc.date.issued2012
dc.identifier.issn0269-7491
dc.description.abstractEnAided phytostabilization using a combination of compost, zerovalent iron grit and coal fly ash (CZA) amendments and revegetation effectively promoted the biological recovery of mining spoils generated at a gold mine in Portugal. Selective dissolution of spoil samples in combination with solid phase characterization using microbeam X-ray absorption near edge structure (μXANES) spectroscopy and microbeam X-ray fluorescence (μXRF) mapping were used to assess As associations in spoils ten years after CZA treatment. The results show that As preferentially associates with poorly crystalline Fe-oxyhydroxides as opposed to crystalline Fe-(oxyhydr)oxide phases. The crystalline Fe(III)-phases dominated in the treated spoil and exceeded those of the untreated spoil three-fold, but only 2.6–6.8% of total As was associated with this fraction. Correlation maps of As:Fe reveal that As in the CZA-treated spoils is primarily contained in surface coatings as precipitates and sorbates. Arsenic binding with poorly crystalline Fe-oxyhydroxides did not inhibit As uptake by plants.
dc.language.isoen
dc.publisherElsevier
dc.subjectiron
dc.subjectXANES
dc.subjectdéchet minier
dc.subject.enselective dissolution
dc.subject.enμXRF mapping
dc.title.enArsenic fractionation in mine spoils 10 years after aided phytostabilization
dc.typeArticle de revue
dc.identifier.doi10.1016/j.envpol.2012.02.016
dc.subject.halSciences de l'environnement/Environnement et Société
bordeaux.journalEnvironmental Pollution
bordeaux.page82-88
bordeaux.volume166
bordeaux.peerReviewedoui
hal.identifierhal-02649639
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02649639v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Environmental%20Pollution&rft.date=2012&rft.volume=166&rft.spage=82-88&rft.epage=82-88&rft.eissn=0269-7491&rft.issn=0269-7491&rft.au=KUMPIENE,%20Jurate&FITTS,%20Jeffrey%20P.&MENCH,%20Michel&rft.genre=article


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