Jump to main content
Jump to site search

Issue 40, 2018
Previous Article Next Article

Simultaneous determination of trace Cd2+ and Pb2+ using GR/L-cysteine/Bi modified screen-printed electrodes

Author affiliations

Abstract

A GR/L-cys/Bi/SPE (reduced graphene oxide/L-cysteine/Bi/screen-printed electrode) was prepared to simultaneously determine Cd2+ and Pb2+ ions by using SWASV (square wave anodic stripping voltammetry). The experimental conditions of the Cd2+ and Pb2+ determination including the deposition potential, the deposition time, pH and the Bi3+ concentration were optimized. Well-defined peaks of Cd2+ and Pb2+ ions could be achieved. Under the optimized conditions, the calibration curves were obtained in linear ranges from 10 μg L−1 to 50 μg L−1 for Cd2+ and from 10 μg L−1 to 50 μg L−1 for Pb2+, with detection limits of 0.98 and 0.56 μg L−1, respectively. Their fitting equations are I (μA) = 0.13C (μg L−1) + 0.60 (R2 = 0.9976) for Cd2+ ions and I (μA) = 0.10C (μg L−1) + 0.51 (R2 = 0.9896) for Pb2+ ions, respectively. The GR/L-cys/Bi/SPE exhibits many merits such as high selectivity, low detection limits, low fabrication costs and wide linear ranges. The GR/L-cys/Bi/SPE has great potential for the determination of Cd2+ and Pb2+ in real water samples.

Graphical abstract: Simultaneous determination of trace Cd2+ and Pb2+ using GR/l-cysteine/Bi modified screen-printed electrodes

Back to tab navigation

Supplementary files

Publication details

The article was received on 27 Jul 2018, accepted on 13 Sep 2018 and first published on 13 Sep 2018


Article type: Paper
DOI: 10.1039/C8AY01676C
Citation: Anal. Methods, 2018,10, 4945-4950
  •   Request permissions

    Simultaneous determination of trace Cd2+ and Pb2+ using GR/L-cysteine/Bi modified screen-printed electrodes

    C. Li, X. Zhao and X. Han, Anal. Methods, 2018, 10, 4945
    DOI: 10.1039/C8AY01676C

Search articles by author

Spotlight

Advertisements