Title : ( Construction of a PVC based 15-crown-5 electrochemical sensor for Ag(I) cation )
Authors: Gholam hossein Ronaghi , Fereshteh Karimian Azimi Saraf , Mohammad Hossein Arbab Zavar ,
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Abstract
The macrocyclic ligand, 15-crown-5, was used as an ionophore for fabrication of a polyvinyl chloride (PVC) based membrane sensor for Ag(I) cation. For construction of the Ag(I) cation selective electrode, the best response characteristics were obtained using the composition: 15-crown-5/PVC/o-nitrophe- nyloctylether (NPOE)/sodium tetraphenyl borate (NaTPB) in the percentage ratio of 5.6/30/60.5/3.9 (w/ w/w/w). The electrochemical sensor shows a linear dynamic range 1.0 _ 10_7–1.0 _ 10_1 mol/L and a Nernstian slope of 58.9 _ 0.5 mV/decade with a detection limit of 8.09 _ 10_8 mol/L for Ag(I) cation. It has a fast response time of <10 s and can be used for at least 8 weeks without any considerable divergences in its potential response. It was successfully used as an indicator electrode in potentiometric titration of Ag(I) cation with I_ and Cl_ anions and also for the determination of this metal cation in radiology waste water.
Keywords
, 15-Crown-5, Electrochemical sensor, Potentiometry, Ag(I)
@article{paperid:1041632,
author = {Ronaghi, Gholam Hossein and Karimian Azimi Saraf, Fereshteh and Arbab Zavar, Mohammad Hossein},
title = {Construction of a PVC based 15-crown-5 electrochemical sensor for Ag(I) cation},
journal = {Chinese Chemical Letters},
year = {2014},
volume = {25},
number = {5},
month = {March},
issn = {1001-8417},
pages = {809--814},
numpages = {5},
keywords = {15-Crown-5; Electrochemical sensor; Potentiometry; Ag(I)},
}
%0 Journal Article
%T Construction of a PVC based 15-crown-5 electrochemical sensor for Ag(I) cation
%A Ronaghi, Gholam Hossein
%A Karimian Azimi Saraf, Fereshteh
%A Arbab Zavar, Mohammad Hossein
%J Chinese Chemical Letters
%@ 1001-8417
%D 2014
