Publication detail

Determination of chromium(VI) by anodic stripping voltammetry using a silver-plated glassy carbon electrode

STOJANOVIC, Z. KOUDELKOVÁ, Z. SEDLÁČKOVÁ, E. HYNEK, D. RICHTERA, L. ADAM, V.

Original Title

Determination of chromium(VI) by anodic stripping voltammetry using a silver-plated glassy carbon electrode

Type

journal article in Web of Science

Language

English

Original Abstract

In this work, differential pulse anodic stripping voltammetry (DP-ASV) for the determination of trace amounts of hexavalent chromium (Cr(vi)) at a silver plated glassy carbon electrode (Ag plated-GCE) is described in detail. A Ag film was prepared by in situ plating of silver on the glassy carbon electrode surface. Several solution conditions and instrumental parameters influencing the electroanalytical response of the Ag plated-GCE were examined and optimized for the determination of Cr(vi). Under the optimized conditions, the calibration curve obtained in CH3COOH/NH3 (aq) medium at pH 5.9 was linear over the wide concentration range of 0.35-40 M Cr(vi). The present method shows a low limit of detection of 0.10 mu M. After evaluation of effects from possible interferences, the proposed method was successfully applied for the quantification of Cr(vi) in real water samples, with satisfactory recovery (97-105%). This method is useful for the determination of chromium in drinking water and achieves sensitivity capable of detecting the limits set by the World Health Organization (WHO).

Keywords

Differential pulse anodic stripping voltammetry (DP-ASV); hexavalent chromium (Cr(VI)); glassy carbon electrode

Authors

STOJANOVIC, Z.; KOUDELKOVÁ, Z.; SEDLÁČKOVÁ, E.; HYNEK, D.; RICHTERA, L.; ADAM, V.

Released

28. 6. 2018

ISBN

1759-9660

Periodical

analytical Methods

Year of study

10

Number

24

State

United Kingdom of Great Britain and Northern Ireland

Pages from

2917

Pages to

2923

Pages count

7

BibTex

@article{BUT149621,
  author="Zorica {Stojanovic} and Zuzana {Koudelková} and Eliška {Dostálová} and David {Hynek} and Lukáš {Richtera} and Vojtěch {Adam}",
  title="Determination of chromium(VI) by anodic stripping voltammetry using a silver-plated glassy carbon electrode",
  journal="analytical Methods",
  year="2018",
  volume="10",
  number="24",
  pages="2917--2923",
  doi="10.1039/c8ay01047a",
  issn="1759-9660"
}