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ID 33007
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Author
Chuanuwatanakul, Suchada
Dungchai, Wijitar
Chailapakul, Orawon
Motomizu, Shoji
Abstract

A sequential injection-square-wave anodic stripping voltammetry (SIA-SWASV) is proposed for the simultaneous determination of Pb(II), Cd(II) and Zn(II), employing an in situ plated bismuth film screen-printed carbon electrode (Bi-SPCE) as a working electrode and hydrochloric acid as a supporting electrolyte. Bi(III) and analyte metal ions were on-line deposited onto a SPCE at -1.4 V vs. Ag/AgCl for 180 s. At a stopped flow, a square-wave voltammogram was recorded from -1.3 to 0 V vs. Ag/AgCl. The experimental conditions were optimized. Under the optimum conditions, the linear ranges were 0 - 70 mu g L-1 for Pb(II) and Cd(II), and 75 - 200 mu g L-1 for Zn(II). The limits of detection (S/N = 3) were obtained at concentrations as low as 0.89 mu g L-1 for Pb(II) and 0.69 mu g L-1 for Cd(II) for a 180-s deposition time. The proposed method was applied to the determination of Pb(II), Cd(II) and Zn(II) in water samples with satisfactory results.

Keywords
DIAMOND THIN-FILM
FLOW-INJECTION
PLATED CARBON; WATER SAMPLES; COPPER
LEAD
ZINC
EXTRACTS
CADMIUM
CD(II)
Note
Published with permission from the copyright holder.
This is published in Analytical Sciences, 2008 Vol.24 Issue.5 pp.589-594
Publisher URL: http://dx.doi.org/10.2116/analsci.24.589
Direct access to Thomson Web of Science record
(C)2008 by The Japan Society for Analytical Chemistry
Published Date
2008-05-10
Publication Title
Analytical Sciences
Volume
volume24
Issue
issue5
Start Page
589
End Page
594
Content Type
Journal Article
language
英語
Refereed
True
DOI
Web of Sience KeyUT
Submission Path
analytical_chemistry/23