Amperometric Detection of Nitrite on Glassy Carbon Electrode Modified with Cobalt Nitroprusside

Amperometric Detection of Nitrite on Glassy Carbon Electrode Modified with Cobalt Nitroprusside

The glassy carbon electrode (GCE) modified with cobalt nitroprusside (CoNP) was prepared by electrochemical method. The CoNP modified electrode (ME) prepared electrochemically on a GCE in two-step. The electrochemical behavior of the modified electrode was studied by cyclic voltammetric technique. The cyclic voltammogram of CoNP showed a redox couple with formal potential [E0 =(Epa+Epc)/2] of 500 mV vs. SCE. The electrocatalytic oxidation of nitrite was studied on the CoNP modified glassy carbon electrode. The CoNP films on the glassy carbon electrode show an excellent electrocatalytic activity toward the oxidation of nitrite in 0.5 mol L-1 KNO3. Hydrodynamic amperometry was used to the detection of nitrite with CoNP. The linear detection limit of the CoNP elctrode for NO2- was from 20×10-6 to 220×10-4 mol L-1 and the detection limit was 10×10-6 mol L-1 (S/N=3).

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Main Author: Sabzi,R.E.
Format: Digital revista
Language:English
Published: Sociedade Portuguesa de Electroquímica 2007
Online Access:http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042007000300008
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spelling oai:scielo:S0872-190420070003000082008-02-18Amperometric Detection of Nitrite on Glassy Carbon Electrode Modified with Cobalt NitroprussideSabzi,R.E. amperometric detection cobalt nitroprusside nitrite oxidation modified electrode modified glassy carbon electrode The glassy carbon electrode (GCE) modified with cobalt nitroprusside (CoNP) was prepared by electrochemical method. The CoNP modified electrode (ME) prepared electrochemically on a GCE in two-step. The electrochemical behavior of the modified electrode was studied by cyclic voltammetric technique. The cyclic voltammogram of CoNP showed a redox couple with formal potential [E0 =(Epa+Epc)/2] of 500 mV vs. SCE. The electrocatalytic oxidation of nitrite was studied on the CoNP modified glassy carbon electrode. The CoNP films on the glassy carbon electrode show an excellent electrocatalytic activity toward the oxidation of nitrite in 0.5 mol L-1 KNO3. Hydrodynamic amperometry was used to the detection of nitrite with CoNP. The linear detection limit of the CoNP elctrode for NO2- was from 20×10-6 to 220×10-4 mol L-1 and the detection limit was 10×10-6 mol L-1 (S/N=3).info:eu-repo/semantics/openAccessSociedade Portuguesa de ElectroquímicaPortugaliae Electrochimica Acta v.25 n.3 20072007-01-01info:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042007000300008en
institution SCIELO
collection OJS
country Portugal
countrycode PT
component Revista
access En linea
databasecode rev-scielo-pt
tag revista
region Europa del Sur
libraryname SciELO
language English
format Digital
author Sabzi,R.E.
spellingShingle Sabzi,R.E.
Amperometric Detection of Nitrite on Glassy Carbon Electrode Modified with Cobalt Nitroprusside
author_facet Sabzi,R.E.
author_sort Sabzi,R.E.
title Amperometric Detection of Nitrite on Glassy Carbon Electrode Modified with Cobalt Nitroprusside
title_short Amperometric Detection of Nitrite on Glassy Carbon Electrode Modified with Cobalt Nitroprusside
title_full Amperometric Detection of Nitrite on Glassy Carbon Electrode Modified with Cobalt Nitroprusside
title_fullStr Amperometric Detection of Nitrite on Glassy Carbon Electrode Modified with Cobalt Nitroprusside
title_full_unstemmed Amperometric Detection of Nitrite on Glassy Carbon Electrode Modified with Cobalt Nitroprusside
title_sort amperometric detection of nitrite on glassy carbon electrode modified with cobalt nitroprusside
description The glassy carbon electrode (GCE) modified with cobalt nitroprusside (CoNP) was prepared by electrochemical method. The CoNP modified electrode (ME) prepared electrochemically on a GCE in two-step. The electrochemical behavior of the modified electrode was studied by cyclic voltammetric technique. The cyclic voltammogram of CoNP showed a redox couple with formal potential [E0 =(Epa+Epc)/2] of 500 mV vs. SCE. The electrocatalytic oxidation of nitrite was studied on the CoNP modified glassy carbon electrode. The CoNP films on the glassy carbon electrode show an excellent electrocatalytic activity toward the oxidation of nitrite in 0.5 mol L-1 KNO3. Hydrodynamic amperometry was used to the detection of nitrite with CoNP. The linear detection limit of the CoNP elctrode for NO2- was from 20×10-6 to 220×10-4 mol L-1 and the detection limit was 10×10-6 mol L-1 (S/N=3).
publisher Sociedade Portuguesa de Electroquímica
publishDate 2007
url http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042007000300008
work_keys_str_mv AT sabzire amperometricdetectionofnitriteonglassycarbonelectrodemodifiedwithcobaltnitroprusside
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