Titanium dioxide solid phase for inorganic species adsorption and determination: the case of arsenic
dc.contributor.author
dc.date.accessioned
2017-05-30T10:39:37Z
dc.date.available
2017-05-30T10:39:37Z
dc.date.issued
2017-04
dc.identifier.issn
0944-1344
dc.identifier.uri
dc.description.abstract
We have evaluated a new titanium dioxide (Adsorbsia As600) for the adsorption of both inorganic As (V) and As (III) species. In order to characterize the sorbent, batch experiments were undertaken to determine the capacities of As (III) and As (V) at pH 7.3, which were found to be 0.21 and 0.14 mmol g−1, respectively. Elution of adsorbed species was only possible using basic solutions, and arsenic desorbed under batch conditions was 50 % when 60 mg of loaded titanium dioxide was treated with 0.5 M NaOH solution. Moreover, its use as a sorbent for solid-phase extraction and preconcentration of arsenic species from well waters has been investigated, without any previous pretreatment of the sample. Solid-phase extraction was implemented by packing several minicolumns with Adsorbsia As600. The method has been validated showing good accuracy and precision. Acceptable recoveries were obtained when spiked waters at 100–200 μg L−1 were measured. The presence of major anions commonly found in waters did not affect arsenic adsoption, and only silicate at 100 mg L−1 level severely competed with arsenic species to bind to the material. Finally, the measured concentrations in water samples containing arsenic from the Pyrinees (Catalonia, Spain) showed good agreement with the ICP-MS results
dc.description.sponsorship
The financial support of the Spanish government through research project CTM2013-48967-C2-2-P is acknowledged. R. Vera acknowledges a grant from Spanish Ministerio de Economía y Competitividad ref. B ES-2014-068314
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Springer Verlag
dc.relation
info:eu-repo/grantAgreement/MINECO//CTM2013-48967-C2-2-P/ES/DESARROLLO, INTERPRETACION Y APLICACION DE TECNICAS EMERGENTES PARA DETERMINAR LA ESPECIACION Y LA DISPONIBILIDAD DE IONES INORGANICOS Y NANOPARTICULAS EN MEDIOS NATURALES/
dc.relation.isformatof
Reproducció digital del document publicat a: http://dx.doi.org/10.1007/s11356-016-7667-0
dc.relation.ispartof
© Environmental Science and Pollution Research, 2017, vol. 24, núm. 12, p. 10939-10948
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Articles publicats (D-Q)
dc.rights
Tots els drets reservats
dc.title
Titanium dioxide solid phase for inorganic species adsorption and determination: the case of arsenic
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/embargoedAccess
dc.embargo.terms
Cap
dc.date.embargoEndDate
info:eu-repo/date/embargoEnd/2026-01-01
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.identifier.idgrec
026089
dc.contributor.funder
dc.relation.ProjectAcronym
dc.identifier.eissn
1614-7499