Jump to main content
Jump to site search

Issue 29, 2018
Previous Article Next Article

Electrochemical determination of Cd(ii) and Pb(ii) in mining effluents using a bismuth-coated carbon fiber microelectrode

Author affiliations

Abstract

A new bismuth-coated carbon fiber microelectrode (BiFME) has been developed and used for the determination of Cd(II) and Pb(II) by square wave anodic stripping voltammetry (SWASV). The results indicate that cadmium and lead ions give well-defined SWASV peaks with no interference. Linear calibration curves over the range 50–350 nmol L−1 for both ions were achieved, with detection limits of 9.2 and 10 nmol L−1 for cadmium and lead, respectively, after applying a 180 s pre-concentration step. Nafion polymer coated BiFMEs were used for decreasing the adsorption of surfactant contaminants, tested with cetyltrimethylammonium bromide (CTAB), Triton X-100 and sodium dodecyl sulfate (SDS) in SWASV of the metal ions. This strategy allowed determination of these trace metal ions in environmental samples, and was employed to determine successfully the concentration of Cd(II) and Pb(II) in samples of mine effluents.

Graphical abstract: Electrochemical determination of Cd(ii) and Pb(ii) in mining effluents using a bismuth-coated carbon fiber microelectrode

Back to tab navigation

Publication details

The article was received on 26 Apr 2018, accepted on 04 Jul 2018 and first published on 04 Jul 2018


Article type: Paper
DOI: 10.1039/C8AY00949J
Anal. Methods, 2018,10, 3624-3630

  •   Request permissions

    Electrochemical determination of Cd(II) and Pb(II) in mining effluents using a bismuth-coated carbon fiber microelectrode

    R. C. Peña, L. Cornejo, M. Bertotti and C. M. A. Brett, Anal. Methods, 2018, 10, 3624
    DOI: 10.1039/C8AY00949J

Search articles by author

Spotlight

Advertisements