Polystyrene-divinyl benzene microspheres with amino methyl phosphonic acid functional hairy brushes for the sorption and speciation of chromium prior to inductively coupled plasma mass spectrometric determination

Aslı Erdem Yayayürük*, Onur Yayayürük, Ece Tukenmez, Bunyamin Karagoz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

This article describes the synthesis and application of a novel sorbent for Cr(III) and Cr(VI) speciation prior to their quantitation by inductively coupled plasma mass spectrometry. The sorbent consists of polystyrene-divinyl benzene microbeads that were graft-coated with poly(oligo (ethylene glycol) methacrylate)-block-poly(glycidyl methacrylate). The particles were finally modified with phosphomethylated triethylene tetramine. The resulting microbeads are shown to be a viable sorbent for Cr(VI). The total concentration of chromium was determined after oxidation of Cr(III) to Cr(VI) with KMnO4 using the novel sorbent. The Cr(III) amount was then calculated by subtracting the concentration of Cr(VI) from that of total chromium. The optimum conditions for batch type sorption were established. Under optimal conditions, the limit of detection and quantification are 0.015 μg L−1 and 0.050 μg L−1, respectively. The kinetics and isotherms of the sorption of Cr(VI) were investigated. Following desorption with 0.1 M hydroxylamine hydrochloride, the method was successfully applied to spiked real water samples and a certified reference material. [Figure not available: see fulltext.].

Original languageEnglish
Article number571
JournalMicrochimica Acta
Volume186
Issue number8
DOIs
Publication statusPublished - 1 Aug 2019

Bibliographical note

Publisher Copyright:
© 2019, Springer-Verlag GmbH Austria, part of Springer Nature.

Funding

The authors gratefully acknowledge the financial support received from Ege University Research Fund (Project No: 2018 Fen 040).

FundersFunder number
Ege Üniversitesi2018 Fen 040

    Keywords

    • Chromium
    • Inductively coupled plasma mass spectrometry
    • Phosphomethylated triethylene tetramine
    • Polymer
    • Sorption isotherm models
    • Sorption kinetics
    • Speciation
    • Water samples

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