Automatic determination of arsenate in drinking water by flow analysis with dual membrane-based separation
dc.contributor.author
dc.date.accessioned
2019-10-09T06:14:41Z
dc.date.available
2019-10-09T06:14:41Z
dc.date.issued
2019-06-15
dc.identifier.issn
0308-8146
dc.identifier.uri
dc.description.abstract
The sequential application of a polymer inclusion membrane (PIM), composed of poly(vinylidenefluoride-co-hexafluoropropylene) and the anionic extractant Aliquat 336, and a microporous polytetrafluoroethylene (PTFE) gas-permeable membrane was utilized for the first time to develop a flow analysis (FA) system, for the automatic determination of trace levels of arsenate (As(V)) in drinking water as arsine. The system incorporated a flow-through extraction cell for separation and preconcentration of arsenate and a gas-diffusion cell for the separation of arsine prior to its spectrophotometric determination based on the discoloration of a potassium permanganate solution. Under optimal conditions the FA system is characterized by a limit of detection of 3.0 μg L −1 As(V) and repeatability of 1.8% (n = 5, 25 μg L −1 As(V)) and 2.8% (n = 5, 50 μg L −1 As(V)). The newly developed FA method was successfully applied to the determination of arsenate in drinking water samples in the μg L −1 concentration range
dc.description.sponsorship
The financial support of the Spanish government through research project CTM2016-78798-C2-2-P (AEI/FEDER/UE) is acknowledged. R. Vera acknowledges a grant from Spanish Ministerio de Economía y Competitividad ref. BES-2014-068314. The authors would like to thank the Australian Research Council for financial support of this research (Grant
LP100100800)
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.relation
MINECO/PE 2016-2018/CTM2016-78798-C2-2-P
dc.relation.isformatof
Versió postprint del document publicat a: https://doi.org/10.1016/j.foodchem.2018.12.122
dc.relation.ispartof
© Food Chemistry, 2019, vol. 283, p. 232-238
dc.relation.ispartofseries
Articles publicats (D-Q)
dc.rights
Tots els drets reservats
dc.subject
dc.title
Automatic determination of arsenate in drinking water by flow analysis with dual membrane-based separation
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/embargoedAccess
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
029409
dc.contributor.funder
dc.type.peerreviewed
peer-reviewed