TITLE

A lead(II) sensor based on a glassy carbon electrode modified with Fe3O4 nanospheres and carbon nanotubes

AUTHOR(S)
Yang, Yinglan; You, Yong; Liu, Yunchun; Yang, Zhousheng
PUB. DATE
April 2013
SOURCE
Microchimica Acta;Apr2013, Vol. 180 Issue 5/6, p379
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We have developed a highly sensitive and selective sensor for lead(II) ions. A glassy carbon electrode was modified with FeO nanospheres and multi-walled carbon nanotubes, and this material was characterized by scanning electron microscopy and X-ray diffraction. The electrode displays good electrochemical activity toward Pb(II) and gives anodic and cathodic peaks with potentials at −496 mV and −638 mV (vs. Ag/AgCl) in pH 6.0 solution. The sensor exhibits a sensitive and fairly selective response to Pb(II) ion, with a linear range between 20 pM and 1.6 nM, and a detection limit as low as 6.0 pM (at a signal-to noise ratio of 3). The sensor was successfully applied to monitor Pb(II) in spiked water samples. [Figure not available: see fulltext.]
ACCESSION #
86169711

 

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