Simultaneous Determination of Cadmium, Lead, Coppe... - BV FAPESP
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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Simultaneous Determination of Cadmium, Lead, Copper and Mercury Ions Using Organofunctionalized SBA-15 Nanostructured Silica Modified Graphite - Polyurethane Composite Electrode

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Author(s):
Cesarino, Ivana [1] ; Cavalheiro, Eder T. G. [1] ; Brett, Christopher M. A. [2]
Total Authors: 3
Affiliation:
[1] Inst Quim Sao Carlos, Dept Quim & Fis Mol, BR-13566590 Sao Paulo - Brazil
[2] Univ Coimbra, Fac Ciencias & Tecnol, Dept Quim, P-3004535 Coimbra - Portugal
Total Affiliations: 2
Document type: Journal article
Source: Electroanalysis; v. 22, n. 1, p. 61-68, JAN 2010.
Web of Science Citations: 69
Abstract

A new sensor has been developed for the simultaneous detection of cadmium, lead, copper and mercury, using differential pulse and square wave anodic stripping voltammetry (DPASV and SWASV) at a graphite-polyurethane composite electrode with SBA-15 silica organofunctionalized with 2-benzothiazolethiol as bulk modifier. The heavy metal ions were preconcentrated on the surface of the modified electrode at - 1.1 V vs. SCE where they complex with 2-benzothiazolethiol and are reduced to the metals, and are then reoxidized. Optimum SWASV conditions lead to nanomolar detection limits and simultaneous determination of Cd(2+), Pb(2+), Cu(2+) and Hg(2+) in natural waters was achieved. (AU)

FAPESP's process: 08/03537-7 - Development and application of composite electrodes based on graphite-poliurethane and graphite-silicone rubber-III: modification with carbon nanotubes and molecularly imprinted polymers
Grantee:Éder Tadeu Gomes Cavalheiro
Support Opportunities: Regular Research Grants