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Ultrasensitive Pb(II) potentiometric sensor based on copolyaniline nanoparticles in a plasticizer-free membrane with a long lifetime.

Abstract:

A newly designed Pb(II) potentiometric sensor based on intrinsically conducting nanoparticles of solid poly(aniline-co-2-hydroxy-5-sulfonic aniline) possessing many ligating functional groups like -NH-, -N=, -OH, -SO(3)H, -NH(2) as ionophores in plasticizer-free vinyl resin solid membranes has been fabricated. A linear Nernstian response is obtained within a wide Pb(II) activity range from 1.0 × 10(-3) to 1.0 × 10(-10) M with a detection limit as low as 2.2 × 10(-11) M. The pH independent pla...

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Publication status:
Published

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Publisher copy:
10.1021/ac2028886

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Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Organic Chemistry
Journal:
Analytical chemistry
Volume:
84
Issue:
1
Pages:
134-140
Publication date:
2012-01-05
DOI:
EISSN:
1520-6882
ISSN:
0003-2700
URN:
uuid:fa13f0c5-d233-4d9d-bd74-1e4eea5ac592
Source identifiers:
246083
Local pid:
pubs:246083
Language:
English

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