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Chromium speciation by TXRF analysis

Kallithrakas-Kontos Nikolaos, Koulouridakis Pavlos, Χατζησταύρος Βασίλειος, Αρετάκη Ιωάννα

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URIhttp://purl.tuc.gr/dl/dias/A15D8045-CA82-465A-A7DF-2B761168C568-
Identifierhttps://doi.org/10.1002/xrs.1141-
Identifierhttps://onlinelibrary.wiley.com/doi/abs/10.1002/xrs.1141-
Languageen-
Extent5 pagesen
TitleChromium speciation by TXRF analysisen
CreatorKallithrakas-Kontos Nikolaosen
CreatorΚαλλιθρακας-Κοντος Νικολαοςel
CreatorKoulouridakis Pavlosen
CreatorΚουλουριδακης Παυλοςel
CreatorΧατζησταύρος Βασίλειοςel
CreatorHatzistavros Vasiliosen
CreatorΑρετάκη Ιωάνναel
CreatorAretaki Ioannaen
PublisherJohn Wiley and Sonsen
Content SummaryChromium (Cr) is an element which usually occurs in two different forms, Cr(III) and Cr(VI). As Cr(VI) is much more toxic than Cr(III), no complicated analytical methods with low detection limit are needed for chromium speciation. In the present work, a new method is presented for chromium speciation at low concentrations by selective membrane collection and total Reflection x-ray fluorescence (TXRF) analysis. Various membranes were produced on the surface of quartz reflectors containing different complexing ligands in Nafion and poly vinyl chloride (PVC) matrices. The membranes were produced on the surface of quartz glass, while the reflectors were immersed in water solutions with low concentrations of chromium salts for many hours. When the equilibration stage was achieved, the reflectors were analyzed by TXRF. Completely selective membranes for Cr(III) and Cr(VI) were prepared with minimum detection limits lower than 0.6 ng.ml−1 (ppb) in drinking wateren
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2015-10-07-
Date of Publication2009-
SubjectChromiumen
SubjectTXRF analysisen
Bibliographic CitationN. Kallithrakas-Kontos, P. Koulouridakis, V. Hatzistavros and I. N. Aretaki, "Chromium speciation by TXRF analysis," X-Ray Spectrom., vol. 38, no. 2, pp. 152–156, Jan. 2009. doi:10.1002/xrs.1141en

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