Journal
ELECTROANALYSIS
Volume 22, Issue 15, Pages 1682-1687Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.201000083
Keywords
Carbon nanotubes; Poly(sodium 4-styrenesulfonate); Bismuth; Stripping voltammetry; Lead; Cadmium
Categories
Funding
- 863 Project [2007AA061501]
- [2006BAE03B08]
- [2008IM040100]
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A high-sensitivity sensing platform for lead(II) and cadmium(11) based on the bismuth modified carbon nanotubes (CNTs)-poly(sodium 4-styrenesulfonate) composite film electrode (CNTs-PSS/Bi) was fabricated The composite film CNTs-PSS/Bi provided remarkably improved sensitivity and reproducibility compared with previously reported CNTs-modified electrodes The detection limits were estimated to be 0 04 1)1)1) for lead(II) and 002 ppb for cadmium( II) with a preconcentration time of 120 s, respectively The linear responses of Cd2+ and Pb2+ were over the ranges of 0 5-50 ppb and 0 5-90 pith. respectively Finally, the practical application of the proposed method was verified in the real water sample with satisfactory results
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