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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.)

Inexpensive and disposable copper mini-sensor modified with bismuth for lead and cadmium determination using square-wave anodic stripping voltammetry

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Author(s):
Figueiredo-Filho, Luiz Carlos S. [1] ; Janegitz, Bruno C. [1] ; Fatibello-Filho, Orlando [1] ; Marcolino-Junior, Luiz Humberto [2] ; Banks, Craig E. [3]
Total Authors: 5
Affiliation:
[1] Univ Fed Sao Carlos, Dept Quim, Ctr Ciencias Exatas & Tecnol, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Fed Parana, Dept Quim, BR-81531990 Curitiba, Parana - Brazil
[3] Manchester Metropolitan Univ, Div Chem & Environm, Sch Chem & Environm, Fac Sci & Engn, Manchester M1 5GD, Lancs - England
Total Affiliations: 3
Document type: Journal article
Source: ANALYTICAL METHODS; v. 5, n. 1, p. 202-207, 2013.
Web of Science Citations: 35
Abstract

The fabrication and evaluation of a disposable copper mini-sensor ex situ modified bismuth film for the sensing of lead(II) and cadmium(II) via square-wave anodic stripping voltammetry (SWASV) is presented. The sensor was ex situ modified with a bismuth film via electro-deposition through applying a potential of -0.18 V vs. Ag/AgCl (3.0 mol L-1 KCl) for 200 seconds in a 0.02 mol L-1 Bi(NO3)(3), 0.15 mol L-1 sodium citrate in 1.5 mol L-1 HCl solution. Under the optimal experimental conditions, the voltammetric response was linearly dependent on the analyte concentrations over the range from 1.3 x 10(-6) to 1.3 x 10(-5) mol L-1 and from 9.9 x 10(-7) to 1.2 x 10(-5) mol L-1 with a limit of detection of 8.3 x 10(-7) mol L-1 and 5.3 x 10(-7) mol L-1 for Pb(II) and Cd(II), respectively. The determination of both toxic metallic species was carried out in natural waters using the sensor obtaining results which are in close agreement with those obtained using Flame Atomic Absorption Spectrometry at a 95% confidence level. (AU)

FAPESP's process: 10/20754-1 - Development of electrochemical sensors based on nanomaterials for the determination of interest pharmaceutical and environmental species
Grantee:Luiz Carlos Soares de Figueiredo Filho
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 08/07529-9 - Development of mini-sensor of bismuth film for the in situ voltammetric determination of paraquat and atrazina in natural waters
Grantee:Luiz Carlos Soares de Figueiredo Filho
Support Opportunities: Scholarships in Brazil - Master