Journal
TALANTA
Volume 119, Issue -, Pages 348-352Publisher
ELSEVIER
DOI: 10.1016/j.talanta.2013.11.032
Keywords
Bismuth screen-printed electrodes; Bismuth sputtered electrodes; Stripping voltammetry; Metal analysis
Categories
Funding
- Spanish Ministerio de Ciencia e Innovacion (MICINN) [CTQ2009-09471, CTQ2012-32863]
- Fundacion Carolina
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A commercially available sputtered bismuth screen-printed electrode (BispSPE) has been pioneeringly applied for the simultaneous determination of Cd(II) and Pb(II) ions in a certified groundwater sample by means of differential pulse anodic stripping voltammetry (DPASV) as an alternative to more conventional bismuth screen-printed carbon electrodes (BiSPCEs). BispSPEs can be used for a large set of measurements without any previous plating or activation. The obtained detection and quantification limits suggest that BispSPEs produce a better analytical performance as compared to In-situ BiSPCE for Pb(II) and Cd(II) determination, but also to Ex-situ BiSPCE for Cd(II) determination. The results confirm the applicability of these devices for the determination of low level concentrations of these metal ions in natural samples with very high reproducibility (0.7% and 2.5% for Pb(II) and Cd(II) respectively), and good trueness (0.3% and 2.4% for Pb(II) and Cd(II) respectively). (C) 2013 Elsevier B.V. All rights reserved.
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