Trace measurement of nickel in orthodontic cages with carbon paste electrode modified multi-walled carbon nanotubes by potentiometric method
Journal Title: Journal of Research in Medical and Dental Science - Year 2017, Vol 5, Issue 3
Abstract
The utility of carbon paste electrode modified with 2-Amino acetophenone isonicotinoyl hydrazone (2- AAINH), for the potentiometric determination of Ni(II) in aqueous medium is demonstrated. The electrode exhibits linear response to Ni(II) over a wide concentration range (7.3×10−8–9.1×10−2) with Nernstian slope of 29±0.5 mV per decade. It has a response time of about 50 s and can be used for a period of two months with good reproducibility. The detection limit of this electrode was 5.0×10−7 M. The proposed electrode shows a very good selectivity for Ni(II) over a wide variety of metal ions. This chemically modified carbon paste electrode was successfully used for the determination of Ni(II) in electronics waste sample solution.
Authors and Affiliations
Mehdi Samizadeh, Mahmoud Ebrahimi
Keywords
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