Publikation:
Stabilization of chromium (VI) in the presence of iron (II): method development and validation

Kurzanzeige
dc.contributor.authorEl-Athman, Fatima
dc.contributor.authorPolenz, Chantal
dc.contributor.authorMahringer, Daniel
dc.date.accessioned2024-06-16T14:17:53Z
dc.date.available2024-06-16T14:17:53Z
dc.date.issued2020
dc.description.abstractThe presence of Cr (VI) in drinking water is mainly caused by leaching of chromium-containing aquifer material into groundwater. In contrast to Cr (III), it has been classified as highly toxic. For this reason, the WHO recommends the implementation of separate guideline values, instead of the so far used limit value of total chromium. The separate evaluation of Cr (VI) in raw water and during removal processes requires the Cr (VI) concentration to remain stable after sampling. In the presence of Fe (II), a stabilization of the samples is necessary to inhibit further reduction of Cr (VI) by Fe (II). In this study, two methods of Cr (VI) stabilization in Fe-(II)-containing water samples are investigated: Fe (II) oxidation by oxygen at high pH values in the presence of buffers and Fe (II) complexation by chelating agents. When adding hydrogen carbonate buffer, Cr (VI) recovery reached 100% at pH values of 10 to 12 in the presence of up to 3 mg L-1 Fe (II). Using hydrogen phosphate buffer, Cr (VI) recovery reached 100% only at pH 12 but for a Fe (II) concentration up to 6 mg L-1. Ammonium buffer was found to be less suitable for Cr (VI) stabilization. The addition of EDTA and citrate resulted in low recovery of Cr (VI), whereas citrate was found to accelerate the Cr (VI) reduction. Quelle: https://www.mdpi.comen
dc.format.extent1 Onlineressource (10 Seiten)
dc.format.mediumonline resource
dc.identifier.doihttps://doi.org/10.60810/openumwelt-515
dc.identifier.urihttps://openumwelt.de/handle/123456789/4462
dc.language.isoeng
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectChromat
dc.subjectErholung
dc.subjectTrinkwasser
dc.titleStabilization of chromium (VI) in the presence of iron (II): method development and validation
dc.title.alternativeStabilization of chromium (VI) in the presence of iron (II)
dc.typeWissenschaftlicher Artikel
dc.type.dcmitext
dc.type.mediumcomputer
dspace.entity.typePublication
local.bibliographicCitation.journalTitleWater
local.bibliographicCitation.originalDOI10.3390/w12040924
local.bibliographicCitation.volume12 (2020), Heft 4
local.collectionAufsätze
local.contributor.authorId02184248
local.identifier.catalogId02474746
local.ingest.leader05133naa a2200000uu 4500
local.jointTitleSTABILIZATION OF CHROMIUM VI IN THE PRESENCE OF IRON II METHOD DEVELOPMENT AND VALIDATION
local.reviewtrue
local.sourcecatalog
local.staffPublicationtrue
relation.isAuthorOfPublication10e92bef-b820-40cc-8ddf-be00dc3f31e7
relation.isAuthorOfPublicationfba58f27-54f7-4850-bd01-9fe404bb8237
relation.isAuthorOfPublication.latestForDiscovery10e92bef-b820-40cc-8ddf-be00dc3f31e7
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