Construction and evaluation of a carbon paste electrode modified with polyaniline-co-poly(dithiodianiline) for enhanced stripping voltammetric determination of metal ions
Construction and evaluation of a carbon paste electrode modified with polyaniline-co-poly(dithiodianiline) for enhanced stripping voltammetric determination of metal ions
A modified carbon paste electrodes (MCPE) have been prepared in this study as an alternative “mercury-free” electrochemical sensor for the determination of Pb(sup2+) and Cd(sup2+) metal ions in aqueous solutions. CPE containing a conducting copolymer of polyaniline-co-poly(2,2'- dithiodianiline) (PANI-co-PDTDA) was used as a modified substrate transducer to achieve enhanced selectivity in stripping voltammetric analysis. The experimental conditions optimised included the supporting electrolyte pH, deposition potential (E(subd)) and time (t(subd)), set at -0.6 V vs. ref. for Pb(sup2+) and -0.8 V for Cd(sup2+); both kept for td = 120 s. The results with the CPE/PANI-co-PDTDA sensor have revealed the linear range within the range of 0.15 – 0.5 µg/L for Pb(sup2+) and the same interval for Cd(sup2+). Finally, the electrode of interest, CPE/PANI-co-PDTDA, can be characterised by the LODs of 0.03 and 0.09 µg/L for Pb(sup2+) and Cd(sup2+) respectively.
Reference:
Somerset, V, Silwana, B, Van der Horst, C and Iwuoha, E. 2014. Construction and evaluation of a carbon paste electrode modified with polyaniline-co-poly(dithiodianiline) for enhanced stripping voltammetric determination of metal ions. In: Sensing in Electroanalysis, University Press Centre, Pardubice, Czech Republic, vol. 8, pp 143-154
Somerset, V., Silwana, B., Van der Horst, C., & Iwuoha, E. (2014). Construction and evaluation of a carbon paste electrode modified with polyaniline-Co-Poly(dithiodianiline) for enhanced stripping voltammetric determination of metal ions., Workflow;14108 University Press Centre. http://hdl.handle.net/10204/7930
Somerset, V, B Silwana, C Van der Horst, and E Iwuoha. "Construction and evaluation of a carbon paste electrode modified with polyaniline-co-poly(dithiodianiline) for enhanced stripping voltammetric determination of metal ions" In WORKFLOW;14108, n.p.: University Press Centre. 2014. http://hdl.handle.net/10204/7930.
Somerset V, Silwana B, Van der Horst C, Iwuoha E. Construction and evaluation of a carbon paste electrode modified with polyaniline-co-poly(dithiodianiline) for enhanced stripping voltammetric determination of metal ions.. Workflow;14108. [place unknown]: University Press Centre; 2014. [cited yyyy month dd]. http://hdl.handle.net/10204/7930.
Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website.