title: Design and construction of new potentiometric sensors for determination of Al3+ ion based on (Z)-2-(2-methyl benzylidene)-1-(2,4-dinitrophenyl) hydrazine.
abstract: (Z)-2-(2-methyl benzylidene)-1-(2,4-dinitrophenyl) hydrazine (L) was used as an active component of PVC membrane electrode (PME), coated graphite electrode (CGE) and coated silver wire electrode (CWE) for sensing Al(3+) ion. The electrodes exhibited linear Nernstian responses to Al(3+) ion in the concentration range of 1.0×10(-6) to 1.0×10(-1)M (for PME, LOD=8.8×10(-7)M), 5.5×10(-7) to 2.0×10(-1)M (for CWE, LOD=3.3×10(-7)M) and 1.5×10(-7) to 1.0×10(-1)M (for CGE, LOD=9.2×10(-8)M). The best performances were observed with the membranes having the composition of L:PVC:NPOE:NaTPB in the ratio of 5:35:57:3 (w/w; mg). The electrodes have a response time of 6s and an applicable pH range of 3.5-9.1. The sensors have a lifetime of about 15weeks and exhibited excellent selectivity over a number of mono-, bi-, and tri-valent cations including alkali, alkaline earth metal, heavy and transition metal ions. Analytical utility of the proposed sensor has been further tested by using it as an indicator electrode in the potentiometric titration of Al(3+) with EDTA. The electrode was also successfully applied for the determination of Al(3+) ion in real and pharmaceutical samples.
authors: Department of Chemistry, Payame Noor University, PO Box 19395-3697, Tehran, Iran. Electronic address: F_mizani@pnu.ac.ir.
authors: F
authors: F
authors: Mizani
authors: Department of Chemistry, Payame Noor University, PO Box 19395-3697, Tehran, Iran.
authors: S
authors: S
authors: Salmanzadeh Ardabili
authors: Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran; Biosensor Research Center, Endocrinology & Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran. Electronic address: ganjali@khayam.ut.ac.ir.
authors: M R
authors: MR
authors: Ganjaliab
authors: Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran; Biosensor Research Center, Endocrinology & Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
authors: F
authors: F
authors: Faridbod
authors: Department of Chemistry, Payame Noor University, PO Box 19395-3697, Tehran, Iran.
authors: M
authors: M
authors: Payehghadr
authors: Department of Architecture, Faculty of Fine Arts, Tehran University, Iran.
authors: M
authors: M
authors: Azmoodeh
mesh_terms: D000535:Aluminum / Q000737:chemistry*; D002412:Cations / Q000737:chemistry*; D004492:Edetic Acid / Q000737:chemistry; D004566:Electrodes; D006108:Graphite / Q000737:chemistry; D006834:Hydrazines / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D017736:Ion-Selective Electrodes; D008673:Metals, Alkaline Earth / Q000737:chemistry; D019216:Metals, Heavy / Q000737:chemistry; D011199:Potentiometry / Q000295:instrumentation*; D012834:Silver / Q000737:chemistry
chemical_list: D002412:Cations; D006834:Hydrazines; D008673:Metals, Alkaline Earth; D019216:Metals, Heavy; C029424:hydrazine; D012834:Silver; D006108:Graphite; D004492:Edetic Acid; D000535:Aluminum
keywords: Aluminum ion-selective electrodes; Coated graphite and coated wire; PVC-membrane; Potentiometry