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Simultaneous Determination of Trace Zinc(II) and Cadmium(II) by Differential Pulse Anodic Stripping Voltammetry Using a MWCNTs–NaDBS Modified Stannum Film Electrode
Author(s) -
Tian Yun Qing,
Li Nian Bing,
Luo Hong Qun
Publication year - 2009
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200900249
Subject(s) - zinc , cadmium , anodic stripping voltammetry , stripping (fiber) , electrode , calibration curve , tap water , materials science , detection limit , metal ions in aqueous solution , chemistry , metal , inorganic chemistry , nuclear chemistry , analytical chemistry (journal) , electrochemistry , chromatography , metallurgy , composite material , environmental engineering , engineering
A multiwalled carbon nanotubes–sodium dodecyl benzene sulfonate (MWCNTs–NaDBS) modified stannum film electrode was employed for the determination of cadmium(II) and zinc(II). The Sn/MWCNTs‐NaDBS film electrode was prepared by applying MWCNTs–NaDBS suspension to the surface of the GCE, while the Sn film was plated in situ simultaneously with the target metal ions. Under optimal conditions, linear calibration curves were obtained in a range of 5.0 −100.0 μg L −1 with detection limits of 0.9 μg L −1 for zinc(II) and 0.8 μg L −1 for cadmium(II), respectively. This film electrode was successfully applied to the determination of Zn(II) and Cd(II) in tap water sample.