Development of a carbon nanotubes paste electrode modified with crosslinked chitosan for cadmium(II) and mercury(II) determination

Author(s)

Janegitz, Bruno C. ^[1] ; Figueiredo-Filho, Luiz Carlos S. ^[1] ; Marcolino-Junior, Luiz H. ^[2] ; Souza, Silveria P. N. ^[1] ; Pereira-Filho, Edenir R. ^[1] ; Fatibello-Filho, Orlando ^[1]

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

• Document type: Journal article
• Source: JOURNAL OF ELECTROANALYTICAL CHEMISTRY; v. 660, n. 1, p. 209-216, SEP 1 2011.
• Web of Science Citations: 66

Abstract

A functionalized carbon nanotubes paste electrode modified with cross-linked chitosan for the determination of trace amounts of cadmium(II) and mercury(II) by linear anodic stripping voltammetry is described. Under optimal experimental conditions, the peak current was linear in the Cd(II) concentration range from 5.9 x 10(-8) to 1.5 x 10(-6) mol L(-1) with a detection limit of 9.8 x 10(-9) mol L(-1) and, for Hg(II) from 6.7 x 10(-9) to 8.3 x 10(-8) mol L(-1) with a detection limit of 2.4 x 10(-9) mol L(-1). The proposed method was successfully applied for the determination of Hg(II) in natural and industrial wastewater samples. and Cd(II) in sediments, human urine, natural, and industrial wastewater samples. (C) 2011 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 06/05146-0 - Development of sensors using carbon nanotubes or graphite powder modified with crosslinked chitosan to determine high toxicity metal ions in wastewater
• Grantee: Bruno Campos Janegitz
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 08/09893-0 - DEVELOPMENT OF BIOSENSORS USING CARBON NANOTUBE AND NANOPARTICLES
• Grantee: Bruno Campos Janegitz
• 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