Development of a carbon nanotubes paste electrode modified with crosslinked chitosan for cadmium(II) and mercury(II) determination |
| |
| Authors: | Bruno C Janegitz Luiz Carlos S Figueiredo-Filho Luiz H Marcolino-Junior Silvéria PN Souza Edenir R Pereira-Filho Orlando Fatibello-Filho |
| |
| Institution: | 1. Departamento de Química, Centro de Ciências Exatas e de Tecnologia, P.O. Box 676, 13560-970, Universidade Federal de São Carlos, São Carlos, SP, Brazil;2. Departamento de Química, Universidade Federal do Paraná, P.O. Box 19001, 81531-990 Curitiba, PR, Brazil |
| |
| 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 × 10−8 to 1.5 × 10−6 mol L−1 with a detection limit of 9.8 × 10−9 mol L−1 and, for Hg(II) from 6.7 × 10−9 to 8.3 × 10−8 mol L−1with a detection limit of 2.4 × 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. |
| |
| Keywords: | Cadmium(II) Mercury(II) Carbon nanotubes Cross-linked chitosan Anodic stripping voltammetry Glutaraldehyde |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
