VOLTAMMETRIC BEHAVIOURS OF Zn(II) AND Ni(II) COMPLEXES WITH ACID RED 1 AT MERCURY ELECTRODE

The interaction of Acid Red 1 (AR 1) with Zn(II) and Ni(II) ions in NH3/NH4C1 buffer solution (pH = 9.20) was investigated for the first time by square-wave and cyclic voltammetry techniques. The voltammetric behaviours of the formed complexes were discussed. From the obtained results, their overall...

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Autores principales:	BIÇER,ENDER, ARAT,CABÍR
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2008
Materias:	Zinc Nickel Acid Red 1 Voltammetry
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072008000400023
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spelling	oai:scielo:S0717-970720080004000232009-05-22VOLTAMMETRIC BEHAVIOURS OF Zn(II) AND Ni(II) COMPLEXES WITH ACID RED 1 AT MERCURY ELECTRODEBIÇER,ENDERARAT,CABÍR Zinc Nickel Acid Red 1 Voltammetry The interaction of Acid Red 1 (AR 1) with Zn(II) and Ni(II) ions in NH3/NH4C1 buffer solution (pH = 9.20) was investigated for the first time by square-wave and cyclic voltammetry techniques. The voltammetric behaviours of the formed complexes were discussed. From the obtained results, their overall stability constants were calculated by using different equations, suitable to the property of the complexation process. The reduction of Ni(II)-AR 1 complex was shown at more positive potential (-0.768 V) than that (-0.910 V) of free Ni(II) in the absence of AR 1. The logarithm of overall stability constant (log p t ) and stoichiometry of the complexation of Ni(II) with AR 1 were determined to be 9.30 and 1:2 (metakligand), respectively. However, the composition of the Zn(II)-AR 1 complex is 1:1, and the logarithm of its stability constant (log ß1:2) was determined as 3.66 by the direct monitoring of the current of free zinc(II).info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.53 n.4 20082008-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072008000400023en10.4067/S0717-97072008000400023
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Zinc Nickel Acid Red 1 Voltammetry
spellingShingle	Zinc Nickel Acid Red 1 Voltammetry BIÇER,ENDER ARAT,CABÍR VOLTAMMETRIC BEHAVIOURS OF Zn(II) AND Ni(II) COMPLEXES WITH ACID RED 1 AT MERCURY ELECTRODE
description	The interaction of Acid Red 1 (AR 1) with Zn(II) and Ni(II) ions in NH3/NH4C1 buffer solution (pH = 9.20) was investigated for the first time by square-wave and cyclic voltammetry techniques. The voltammetric behaviours of the formed complexes were discussed. From the obtained results, their overall stability constants were calculated by using different equations, suitable to the property of the complexation process. The reduction of Ni(II)-AR 1 complex was shown at more positive potential (-0.768 V) than that (-0.910 V) of free Ni(II) in the absence of AR 1. The logarithm of overall stability constant (log p t ) and stoichiometry of the complexation of Ni(II) with AR 1 were determined to be 9.30 and 1:2 (metakligand), respectively. However, the composition of the Zn(II)-AR 1 complex is 1:1, and the logarithm of its stability constant (log ß1:2) was determined as 3.66 by the direct monitoring of the current of free zinc(II).
author	BIÇER,ENDER ARAT,CABÍR
author_facet	BIÇER,ENDER ARAT,CABÍR
author_sort	BIÇER,ENDER
title	VOLTAMMETRIC BEHAVIOURS OF Zn(II) AND Ni(II) COMPLEXES WITH ACID RED 1 AT MERCURY ELECTRODE
title_short	VOLTAMMETRIC BEHAVIOURS OF Zn(II) AND Ni(II) COMPLEXES WITH ACID RED 1 AT MERCURY ELECTRODE
title_full	VOLTAMMETRIC BEHAVIOURS OF Zn(II) AND Ni(II) COMPLEXES WITH ACID RED 1 AT MERCURY ELECTRODE
title_fullStr	VOLTAMMETRIC BEHAVIOURS OF Zn(II) AND Ni(II) COMPLEXES WITH ACID RED 1 AT MERCURY ELECTRODE
title_full_unstemmed	VOLTAMMETRIC BEHAVIOURS OF Zn(II) AND Ni(II) COMPLEXES WITH ACID RED 1 AT MERCURY ELECTRODE
title_sort	voltammetric behaviours of zn(ii) and ni(ii) complexes with acid red 1 at mercury electrode
publisher	Sociedad Chilena de Química
publishDate	2008
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072008000400023
work_keys_str_mv	AT bicerender voltammetricbehavioursofzniiandniiicomplexeswithacidred1atmercuryelectrode AT aratcabir voltammetricbehavioursofzniiandniiicomplexeswithacidred1atmercuryelectrode
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VOLTAMMETRIC BEHAVIOURS OF Zn(II) AND Ni(II) COMPLEXES WITH ACID RED 1 AT MERCURY ELECTRODE

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