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ABTS‐Multiwalled Carbon Nanotubes Nanocomposite/Bi Film Electrode for Sensitive Determination of Cd and Pb by Differential Pulse Stripping Voltammetry
Author(s) -
Deng Wenfang,
Tan Yueming,
Fang Zhengfa,
Xie Qingji,
Li Yunyong,
Liang Xiaoling,
Yao Shouzhuo
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.200900207
Subject(s) - stripping (fiber) , electrode , nanocomposite , differential pulse voltammetry , anodic stripping voltammetry , analytical chemistry (journal) , potentiostat , materials science , detection limit , carbon nanotube , glassy carbon , voltammetry , nuclear chemistry , chemistry , cyclic voltammetry , electrochemistry , chromatography , nanotechnology , composite material
A 2,2′‐azinobis (3‐ethylbenzothiazoline‐6‐sulfonate) diammonium salt (ABTS)‐multiwalled carbon nanotubes (MWCNTs) nanocomposite/Bi film modified glassy carbon (GC) electrode was constructed for the differential pulse stripping voltammetric determination of trace Pb 2+ and Cd 2+ . This electrode was more sensitive than ABTS‐free Bi/GC and Bi/MWCNTs/GC electrodes. Linear responses were obtained in the range from 0.5 to 35 μg L −1 for Cd 2+ and 0.2 to 50 μg L −1 Pb(II), with detection limits of 0.2 μg L −1 for Cd 2+ and 0.1 μg L −1 for Pb 2+ , respectively. This sensor was applied to the simultaneous detection of Cd 2+ and Pb 2+ in water samples with satisfactory recovery.