alexa Chromium and its speciation in water samples by HPLC ICP-MS--technique establishing metrological traceability: a review since 2000.
Chemical Engineering

Chemical Engineering

Journal of Chromatography & Separation Techniques

Author(s): Markiewicz B, Komorowicz I, Sajng A, Belter M, Barakiewicz D

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Abstract Chromium holds a special position among living organisms because depending on its species it can be either essential or toxic. Cr(VI) even at very low concentrations is harmful and carcinogenic, while Cr(III) is a necessary microelement for cellular metabolism. Therefore, a simple analysis of Cr concentration in collected samples will not be able to distinguish these differences effectively: for a proper chemical analysis we need to perform a reliable detection and quantification of Cr species. Separation and detection of chromium can be accomplished with high performance liquid chromatography hyphenated to inductively coupled plasma mass spectrometry (HPLC/ICP-MS) in a one-step. Our review assembles articles published since 2000 regarding chromium speciation in water samples with the use of HPLC/ICP-MS. It addresses the following issues: chromium chemistry, the possibilities of dealing with interferences, metrological aspects, analytical performance and speciated isotope dilution mass spectrometry (SIDMS) which is a definitive measurement method. The authors would like to advocate this hyphenated advanced technique as well as the metrological approach in speciation analysis of chromium. Copyright © 2014 Elsevier B.V. All rights reserved. This article was published in Talanta and referenced in Journal of Chromatography & Separation Techniques

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