Arsenic fractionation in mine spoils 10 years after aided phytostabilization
hal.structure.identifier | Division of Waste Science and Technology | |
dc.contributor.author | KUMPIENE, Jurate | |
hal.structure.identifier | Environmental Sciences Department | |
dc.contributor.author | FITTS, Jeffrey P. | |
hal.structure.identifier | Biodiversité, Gènes & Communautés [BioGeCo] | |
dc.contributor.author | MENCH, Michel | |
dc.date.issued | 2012 | |
dc.identifier.issn | 0269-7491 | |
dc.description.abstractEn | Aided 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.iso | en | |
dc.publisher | Elsevier | |
dc.subject | iron | |
dc.subject | XANES | |
dc.subject | déchet minier | |
dc.subject.en | selective dissolution | |
dc.subject.en | μXRF mapping | |
dc.title.en | Arsenic fractionation in mine spoils 10 years after aided phytostabilization | |
dc.type | Article de revue | |
dc.identifier.doi | 10.1016/j.envpol.2012.02.016 | |
dc.subject.hal | Sciences de l'environnement/Environnement et Société | |
bordeaux.journal | Environmental Pollution | |
bordeaux.page | 82-88 | |
bordeaux.volume | 166 | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-02649639 | |
hal.version | 1 | |
hal.popular | non | |
hal.audience | Internationale | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-02649639v1 | |
bordeaux.COinS | ctx_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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