Use of 3-D plots to avoid mutual interference in bianalyte ASV determinations: Application to cadmium and lead detection
Journal article
Authors/Editors
Strategic Research Themes
No matching items found.
Publication Details
Author list: Wongkaew N., Guajardo C., Rijiravanich P., Somasundrum M., Surareungchai W.
Publisher: Elsevier
Publication year: 2011
Journal: Talanta: The International Journal of Pure and Applied Analytical Chemistry (0039-9140)
Volume number: 85
Issue number: 2
Start page: 1225
End page: 1228
Number of pages: 4
ISSN: 0039-9140
eISSN: 1873-3573
Languages: English-Great Britain (EN-GB)
View in Web of Science | View on publisher site | View citing articles in Web of Science
Abstract
We have examined the anodic stripping voltammetry (ASV) of Cd and Pb at carbon screen printed electrodes modified by an in situ deposited Bi film, and have demonstrated significant cross talk between the stripping peaks of the two metals. A simple and generally applicable method for dealing with this problem is described, based on curve-fitting three-dimensional calibration plots using MATLAB. Non-linear fitting to the calibrations produced coefficients of determination R2 > 0.99 for both metals. We have illustrated use of the plots in conjunction with Bi-plated electrodes by measuring 15 randomly selected mixtures of Cd and Pb of known concentration. ฉ 2011 Elsevier B.V.
Keywords
Anodic stripping voltammetry, Bismuth film, Cadmium, screen-printed electrode
Contact Information