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Vol. 25 No. 3 (2013): Vol 25 Issue 3

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Synthesis of Metal Oxide Nanoparticles of Nickel(II), Vanadium(V) and Potentiometric Determination of the Stability Constants of Their Complexes with Histidine and Glutamine at Different Temperatures in Aqueous Solutions

https://doi.org/10.14233/ajchem.2013.13002
Ebrahim Ghiamati
Chemistry Department, University of Birjand, Birjand 97179-414, Iran
Maryam Lashkari
Chemistry Department, University of Birjand, Birjand 97179-414, Iran
Monavar Hasheminia
Chemistry Department, University of Birjand, Birjand 97179-414, Iran

Corresponding Author(s) : Ebrahim Ghiamati

eghimati@yahoo.com

Asian Journal of Chemistry, Vol. 25 No. 3 (2013): Vol 25 Issue 3

Abstract

In this research, the stability constants of complexes of L-histidine and glutamine with metal ions and nanoparticles of nickel(II) and vanadium(V) at four different temperatures of 25, 30, 35 and 40 ºC using Bjerrum procedure were determined potentiometrically. In generating the data, GRC Beta software, which is an improved version of BEST routine and developed in our laboratory was used. The parameters affecting the stability constants and behaviour of nanopartiocles with respect to corresponding bulk metallic ions have been discussed. Furthermore, thermodynamics parameters i.e., DH, DS, DG for the complexes were also evaluated.

Keywords

Nanoparticles Amino acid complex Stability constant Potentiometric titration Thermodynamic parameters
Ghiamati, E., Lashkari, M., & Hasheminia, M. (2012). Synthesis of Metal Oxide Nanoparticles of Nickel(II), Vanadium(V) and Potentiometric Determination of the Stability Constants of Their Complexes with Histidine and Glutamine at Different Temperatures in Aqueous Solutions. Asian Journal of Chemistry, 25(3), 1361–1365. https://doi.org/10.14233/ajchem.2013.13002
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