NDLI: Electrochemical characterization of carbon nanotubes/nafion/aspartic acid modified screen printed electrode in development of sensor for determination of Pb(II)

Content Provider	Semantic Scholar
Author	Yusof, Nor Azah Nurulhaidah, Daud Saat, Siti Zareena Mohd Abdullah, Abdul Halim
Copyright Year	2012
Abstract	A screen printed electrode (SPE) based sensor for determination of Pb 2+ has been developed by modifying the SPE with multiwall carbon nanotubes (MWCNTs), Nafion and aspartic acid for determination of Pb 2+ using cyclic voltammetry. The electrochemical characteristics of CNTs /Nafion/aspartic acid modified SPE were examined in several conditions such as pH, different concentration of Pb 2+ and reproducibility of the detection. It was observed that the CNTs/Nafion/aspartic acid modified SPE has significantly superior analytical performance in determination of Pb 2+ compared to the unmodified electrode. The determination of Pb 2+ by using modified electrode was reproducible with R.S.D of 1.76%. The electrochemical redox peak current of Pb 2+ showed a linear response towards different concentration of Pb 2+ and linear calibration curve was obtained in the range of 1 to 50 μM. The sensitivity expressed as the slope of the calibration curve is 5.22 μA/μM.
Starting Page	10358
Ending Page	10364
Page Count	7
File Format	PDF HTM / HTML
Volume Number	7
Alternate Webpage(s)	http://www.electrochemsci.org/papers/vol7/71110358.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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