Title of article :
Development of a Polymeric Membrane Electrode for Determination of Citrate Ions by Potentiometric Technique
Author/Authors :
Mazloum-Ardakani, Mohamma Department of Chemistry - Faculty of Science - Yazd University , Hoseynidokht, Farzaneh Department of Chemistry - Payame Noor University (PNU) Ardakan Center , Zare, Hamid Reza Department of Chemistry - Payame Noor University (PNU) Ardakan Center , Vafazadeh, Rasool Department of Chemistry - Faculty of Science - Yazd University
Abstract :
This paper reports a new citrate-selective electrode based on mono- and di-nuclear copper (II) complexes that bear a salicylaldehyde-semi-carbazone tridentate Schiff bases ligand. The electrode serves as a membrane carrier for citrate anions. The performance of the electrode is investigated using potentiometric technique. The results of potentiometry indicate that the developed electrode has a Nernstian slope of 19.7±0.3 mV in a linear concentration range of 1.0×10-7-1.0×10-1 M, a detection limit of 6.3×10-8 M, an applied pH range of 8.0-12.0, and a response time of less than 15 seconds. It can also be used for 21 days without any considerable divergence of potentials
Keywords :
Citrate-selective electrode , Ionophore , Polyvinyl chloride membrane , Potentiometry
Journal title :
Astroparticle Physics
