Iranian Journal of Chemistry and Chemical Engineering, ( ISI ), Volume (34), No (4), Year (2015-10) , Pages (89-96)

Title : ( A Novel Carbon Paste Electrode for Potentiometric Determination of Vanadyl Ion )

Authors: A. Darroudi , Hossein Eshghi , shima rezaeian , Mahmod CHamsaz , Mehdi Bakavoli , K. Haghbeen , A. Hosseiny ,

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Carbon paste electrode was modified by disodium 2,4-diamino-7-methylbenzo[g] pteridine-5,10-dioxide to fabricate a sensor for potentiometric determination of vanadyl ion (VO2+) in aqueous medium. The new ligand was synthesized in three steps with high yield. The optimal composition of the carbon paste was made of graphite powder (64.5%), ionophore (16.6%), paraffin oil (17.8%), and sodium tetraphenylborate (NaTPB, 1.1%). The electrode exhibited a constant sensitivity of 30.20 ± 0.5 mV to VO2+ ions over a concentration range of 5 M to 1 mM. The detection limit was calculated to be 5 M with a response time of less than 35 s. The electrode showed to be highly reproducible over a period of 3 weeks. This sensor exhibits high selectivity to VO2+ ions and was successfully employed for potentiometric titration of VO2+ ions with EDTA.

Keywords

, Carbon paste electrode, Potentiometry, Vanadyl ion, 2, 4-diamino-7-methylbenzo[g]pteridine-
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@article{paperid:1053101,
author = {A. Darroudi and Eshghi, Hossein and Rezaeian, Shima and CHamsaz, Mahmod and Bakavoli, Mehdi and K. Haghbeen and A. Hosseiny},
title = {A Novel Carbon Paste Electrode for Potentiometric Determination of Vanadyl Ion},
journal = {Iranian Journal of Chemistry and Chemical Engineering},
year = {2015},
volume = {34},
number = {4},
month = {October},
issn = {1021-9986},
pages = {89--96},
numpages = {7},
keywords = {Carbon paste electrode; Potentiometry; Vanadyl ion; 2;4-diamino-7-methylbenzo[g]pteridine- 5;10-dioxide},
}

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%0 Journal Article
%T A Novel Carbon Paste Electrode for Potentiometric Determination of Vanadyl Ion
%A A. Darroudi
%A Eshghi, Hossein
%A Rezaeian, Shima
%A CHamsaz, Mahmod
%A Bakavoli, Mehdi
%A K. Haghbeen
%A A. Hosseiny
%J Iranian Journal of Chemistry and Chemical Engineering
%@ 1021-9986
%D 2015

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