scholarly journals Neodymium(III) PVC Membrane Electrodchemical Sensor Based on N-benzoylethylidene-2-aminobenzylamine

2012 ◽  
Vol 9 (4) ◽  
pp. 1941-1950 ◽  
Author(s):  
Hassan Ali Zamani ◽  
Mojdeh Zaferoni ◽  
Soraia Meghdadi
Keyword(s):  
Alkaline Earth ◽  
High Selectivity ◽  
Pvc Membrane ◽  
Indicator Electrode ◽  
Solution Ph ◽  
Response Characteristics ◽  
Potentiometric Response ◽  
Nernstian Slope ◽  
Mouth Wash

The N-benzoylethylidene-2-aminobenzylamine (BEA) was used as a suitable ionophore in construction of neodymium ion selective electrode. The electrode with composition of 30% PVC, 58% solvent mediator (NB), 2% ionophore (BEA) and 10% anionic additive (OA) shows the best potentiometric response characteristics. The Nd3+sensor exhibits a Nernstian slope of 21.2 ± 0.2 mV decade-1over the concentration range of 1.0 × 10-6to 1.0 × 10-2mol L-1, and a detection limit of 6.3 × 10-7mol L-1of Nd3+ions. The potentiometric response of the sensor is independent of the solution pH in the range of 2.4–8.5. It has a very short response time, in the whole concentration range (~7 s), and can be used for at least eight weeks. The proposed sensor revealed high selectivity with respect to all common alkali, alkaline earth, transition and heavy metal ions, including members of the lanthanide family other than Nd3+. The Nd3+sensor was successfully applied as an indicator electrode in the potentiometric titration of Nd3+ions with EDTA. The electrode was also employed for the determination of the fluoride ion in two mouth wash preparations.

scholarly journals Construction of Tb3+ PVC-MembraneElectrode Based on N,N’-Bis(pyrrolylmethylene)-2-aminobenzylamine

2011 ◽  
Vol 8 (s1) ◽  
pp. S203-S210 ◽  
Author(s):  
Hassan Ali Zamani ◽  
Zynab Rafati ◽  
Soraia Meghdadi
Keyword(s):  
Heavy Metal Ions ◽  
Alkaline Earth ◽  
Pvc Membrane ◽  
Indicator Electrode ◽  
Fluoride Ion ◽  
Solution Ph ◽  
Potentiometric Response ◽  
Nernstian Slope ◽  
Mouth Wash

In this work, we report as new Tb3+-PVC membrane sensor based onN,N’-bis(pyrrolylmethylene)- 2-aminobenzylamine (PMA) as a suitable ion carrier. Poly vinylchloride (PVC)-based membrane composed of PMA with oleic acid (OA) as anionic additives and acetophenone (AP) as plasticizing solvent mediators. The Tb3+sensor exhibits a Nernstian slope of 19.7±0.4 mV per decade over the concentration range of 1.0×10-5to 1.0×10-2M and a detection limit of 4.6×10-6M of Tb3+ions. The potentiometric response of the sensor is independent of the solution pH in the range of 2.9–8.1. It has a very short response time, in the whole concentration range (∼5 s). The recommended sensor revealed comparatively good selectivity with respect to most alkali, alkaline earth, some transition and heavy metal ions. It was successfully employed as an indicator electrode in the potentiometric titration of Tb(III) ions with EDTA. The electrode was also employed for the determination of the fluoride ion in two mouth wash preparations and the determination of Tb3+ions concentration in mixtures of three different ions.

scholarly journals PVC-Membrane Potentiometric Electrochemical Sensor Based on 2-(4-Oxopentan-2-ylideneamino)isoindoline-1,3-dione for Selective Determination of Holmium(III)

2011 ◽  
Vol 8 (s1) ◽  
pp. S97-S104 ◽  
Author(s):  
Hassan Ali Zamani
Keyword(s):  
Heavy Metal Ions ◽  
Alkaline Earth ◽  
Fast Response ◽  
Pvc Membrane ◽  
Indicator Electrode ◽  
Selective Determination ◽  
Nernstian Slope ◽  
Neutral Ionophore ◽  
Ph Range

2-(4-Oxopentan-2-ylideneamino) isoindoline-1,3-dione (OID) was found to be a suitable neutral ionophore in the fabrication of a highly selective Ho3+membrane sensor. The electrode has a near-Nernstian slope of 19.6±0.5 mV per decade with a wide concentration range between 1.0×10-6and 1.0×10-2mol/L in the pH range of 3.5–8.8, having a fast response time (∼5 s) and a detection limit of 5.8×10-7mol/L. This electrode presented very good selectivity and sensitivity towards the Ho3+ions over a wide variety of cations, including alkali, alkaline earth, transition and heavy metal ions. The practical utility of the electrode has been demonstrated by its use as an indicator electrode for the potentiometric titration of a Ho3+solution with EDTA and for the determination of Ho3+ions concentration in mixtures of two and three different ions.

scholarly journals Application ofN-Quinoline-2-carboxamido-8-aminoquinoline in Fabrication of a Ho(III)-PVC Membrane Sensor

2011 ◽  
Vol 8 (s1) ◽  
pp. S237-S244 ◽  
Author(s):  
Hassan Ali Zamani ◽  
Samaneh Langroodi ◽  
Soraia Meghdadi
Keyword(s):  
Heavy Metal ◽  
Dynamic Range ◽  
Fast Response ◽  
Pvc Membrane ◽  
Indicator Electrode ◽  
Membrane Composition ◽  
Membrane Sensor ◽  
Potentiometric Response ◽  
Mouth Wash

TheN-quinoline-2-carboxamido-8-aminoquinoline (QCA) was used as a suitable ion carrier in the construction of a Ho(III) PVC-based membrane sensor. This sensor demonstrated good selectivity and sensitivity towards the holmium ion for a broad variety of cations, including alkali, alkaline earth, transition and heavy metal ions. The proposed electrode exhibits a linear dynamic range between 1.0×10-6and 1.0×10-2M, with a near Nernstian slope of 20.4±0.3 mV per decade and a detection limit of 4.2×10-7M. The best performance was obtained with a membrane composition of 30% poly(vinyl chloride), 56% nitrobenzene, 2% sodium tetraphenyl borate, 10% oleic acid and 2% QCA. The potentiometric response of the constructed electrode is pH independent in the range of 2.4-7.4. The sensor possesses the advantages of short conditioning time, fast response time (∼ 5 s) and especially, good selectivity towards transition and heavy metal and some mono, di and trivalent cations. The Ho3+sensor was successfully applied as an indicator electrode in the potentiometric titration of Ho(III) ions with EDTA. The electrode was also used for the determination of Ho3+ions in mixtures of different ions and the determination of the fluoride ion in mouth wash solutions.

scholarly journals Determination of Nd3+Ions in Solution Samples by a Coated Wire Ion-Selective Sensor

2012 ◽  
Vol 9 (1) ◽  
pp. 83-88 ◽  
Author(s):  
Hassan Ali Zamani
Keyword(s):  
High Selectivity ◽  
Water Solution ◽  
Fast Response ◽  
Indicator Electrode ◽  
Coated Wire ◽  
Nernstian Slope ◽  
Ph Range ◽  
Coated Wire Electrode ◽  
Selective Sensor

A new coated wire electrode (CWE) using 5-(methylsulfanyl)-3-phenyl-1H-1,2,4-triazole (MPT) as an ionophore has been developed as a neodymium ion-selective sensor. The sensor exhibits Nernstian response for the Nd3+ions in the concentration range of 1.0×10−6-1.0×10−2M with detection limit of 3.7×10−7M. It displays a Nernstian slope of 20.2±0.2 mV/decade in the pH range of 2.7–8.1. The proposed sensor also exhibits a fast response time of ∼5 s. The sensor revealed high selectivity with respect to all common alkali, alkaline earth, transition and heavy metal ions, including members of the lanthanide family other than Nd3+. The electrode was used as an indicator electrode in the potentiometric titration of Nd(III) ions with EDTA. The electrode was also employed for the determination of the Nd3+ions concentration in water solution samples.

scholarly journals Construction of Eu3+Ion-Selective Electrode Based on 1,2-Diaminopropane-N,N,N',N'-tetraacetic acid

2011 ◽  
Vol 8 (s1) ◽  
pp. S467-S473 ◽  
Author(s):  
Mohammad Reza Abedi ◽  
Hassan Ali Zamani
Keyword(s):  
Alkaline Earth ◽  
Dynamic Range ◽  
Pvc Membrane ◽  
Membrane Electrode ◽  
Tetraacetic Acid ◽  
Pvc Membrane Electrode ◽  
Nernstian Slope ◽  
Wide Linear Dynamic Range ◽  
Ph Range

A new Eu3+PVC membrane electrode based on 1,2-diaminopropane-N, N,N',N'-tetraacetic acid (DAPTA) as a suitable ionophore has been prepared and studied. The electrode shows a good selectivity for Eu(III) ion with respect to most common cations including alkali, alkaline earth, transition and heavy metal ions. This electrode has a wide linear dynamic range from 1.0×10-6to 1.0×10-2M with a Nernstian slope of 19.7±0.5 mV per decade and a low detection limit of 7.2×10-7M in the pH range of 2.5–9.1, while the response time was rapid (<10 s). The practical utility of the electrodes has been demonstratedby their use as indicator electrodes in the potentiometric titration of Eu3+ions with EDTA and for the determination of Eu3+in some water sample solutions.

scholarly journals Highly selective potentiometric determination of Fe(III) ions using Tris-(1,2-diiminocyclohexylmethyl-5-Cl-2-hydroxyl benzaldehyde) based membrane electrode

2015 ◽  
Vol 11 (8) ◽  
pp. 3798-3803
Author(s):  
M. H. Fekri ◽  
Maryam Darvishpour ◽  
M. Chegeni ◽  
H Dashti Khavidaki
Keyword(s):  
Heavy Metal ◽  
Response Time ◽  
Heavy Metal Ions ◽  
Alkaline Earth ◽  
Indicator Electrode ◽  
Membrane Electrode ◽  
Membrane Sensor ◽  
Potentiometric Response ◽  
Poly Vinyl Chloride

A novel ion-selective poly(vinyl chloride) membrane sensor for Fe(III) ions based on Tris-(1,2-diiminocyclohexylmethyl-5-Cl-2-hydroxyl benzaldehyde) are reported in this paper. The electrode exhibits a good potentiometric response for Fe(III), response time ≤ 20 s, over a wide concentration range 1.0 × 10-5 to 1.0 × 10-1 M with a slope 19.4 ± 0.5 mV/decade. The potentiometric response is independent on the pH of solution in the range of 1.5-5.0. The proposed electrode can be used for at least two months without any considerable divergence in potentials.It exhibits very good selectivity relative to a wide variety of alkali, alkaline earth, transition and heavy metal ions. The electrode assembly was also used as indicator electrode in the potentiometric titration of Fe(III) with EDTA.

A novel copper selective sensor based on ion imprinted 2-vinylpyridine polymer

2018 ◽  
Vol 96 (12) ◽  
pp. 1027-1036
Author(s):  
Murat Yolcu ◽  
Nurşen Dere
Keyword(s):  
Environmental Water ◽  
Pvc Membrane ◽  
Indicator Electrode ◽  
Potentiometric Response ◽  
Ion Imprinted ◽  
Aas Method ◽  
Ph Range ◽  
Determination Of Copper ◽  
Selective Sensor

A novel potentiometric Cu2+-selective microsensor has been developed that is based upon ion imprinted 2-vinylpyridine polymer. The polymer was synthesized using Cu(II) ions, 2-vinylpyridine, methacrylic acid, and ethylene glycol dimethacrylate as a template, functional monomer, and cross-linker, respectively. The resultant polymer was used as ionophore to obtain a selective potentiometric response towards Cu(II) ions in the structure of the PVC membrane. The detection limit of the microsensor was determined to be 8.4 × 10−7 mol/L, and its response time was considerably short (less than 15 s). The prepared microsensor exhibited a near-Nernstian response for Cu(II) ions over the concentration range of 10−1 to 10−6 mol/L, with a slope of 28.5 mV per decade over 2 months, and without any considerable divergence in potentials. The microsensor was effectively performed in a pH range between 4.0 and 7.0 and used as an indicator electrode in the potentiometric titration of Cu(II) ions with EDTA. The proposed microsensor has been successfully demonstrated for the determination of copper in a number of environmental water samples. The obtained potentiometric results were in good harmony with the results obtained by the AAS method.

scholarly journals Selective Thallium (I) Ion Sensor Based on Functionalised ZnO Nanorods

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Z. H. Ibupoto ◽  
Syed M. Usman Ali ◽  
K. Khun ◽  
Magnus Willander
Keyword(s):  
High Selectivity ◽  
Zno Nanorods ◽  
High Sensitivity ◽  
Fast Response ◽  
Indicator Electrode ◽  
Coated Glass Substrate ◽  
Ion Sensor ◽  
Potentiometric Response ◽  
Growth Method

Well controlled in length and highly aligned ZnO nanorods were grown on the gold-coated glass substrate by hydrothermal growth method. ZnO nanorods were functionalised with selective thallium (I) ion ionophore dibenzyldiaza-18-crown-6 (DBzDA18C6). The thallium ion sensor showed wide linear potentiometric response to thallium (I) ion concentrations ( M to  M) with high sensitivity of 36.87 ± 1.49 mV/decade. Moreover, thallium (I) ion demonstrated fast response time of less than 5 s, high selectivity, reproducibility, storage stability, and negligible response to common interferents. The proposed thallium (I) ion-sensor electrode was also used as an indicator electrode in the potentiometric titration, and it has shown good stoichiometric response for the determination of thallium (I) ion.

scholarly journals A lutetium pvc membrane sensor based on (2-oxo-1,2-diphenylethylidene)-n-phenylhydrazinecarbothioamide

2011 ◽  
Vol 76 (9) ◽  
pp. 1295-1305 ◽  
Author(s):  
Hassan Ali ◽  
Reza Ganjali ◽  
Farnoush Faridbod
Keyword(s):  
Alkaline Earth ◽  
High Sensitivity ◽  
Lanthanide Ions ◽  
Pvc Membrane ◽  
Indicator Electrode ◽  
Short Response Time ◽  
Membrane Sensor ◽  
Nernstian Slope ◽  
Ph Range ◽  
Pvc Membrane Sensor

Based on the former experience on the design and construction of metal ions sensors, especially those of high sensitivity for lanthanides, (2-oxo-1,2-diphenylethylidene)-N-phenylhydrazinecarbothioamide (PHCT) was used to construct a Lu3+ PVC sensor exhibiting a Nernstian slope of 19.8?0.3 mV decade-1. The sensor was found to function well over a concentration range of 1.0?10-2 and 1.0?10-6 mol L-1 of the target ion with a detection limit of 6.8?10-7 mol L-1. The sensor selectivity against many common alkaline, alkaline earth, transition, heavy metals and specially lanthanide ions was very good and it functioned well in the pH range 2.5 - 8.7. Having a lifetime of at least 2 months and a short response time of ?5 s, the sensor was successfully used as an indicator electrode in the potentiometric titration of Lu3+ ions.

Comparative Study of PVC-Free All-Solid-State, PVC Membrane, and Carbon Paste Ion-Selective Electrodes for the Determination of Dapoxetine Hydrochloride in Pharmaceutical Formulation

2016 ◽  
Vol 99 (6) ◽  
pp. 1499-1504 ◽  
Author(s):  
Azza Aziz ◽  
Nesrin Khamees ◽  
Tagreed Abdel-Fattah Mohamed ◽  
Abeer Rashad Derar
Keyword(s):  
Solid State ◽  
Pvc Membrane ◽  
Carbon Paste ◽  
Sensing Element ◽  
Response Characteristics ◽  
Carbon Paste Electrodes ◽  
Nernstian Slope ◽  
Nail Varnish ◽  
Dapoxetine Hydrochloride

Abstract The potentiometric response characteristics and analytical applications of a poly(vinyl chloride) (PVC)-free all-solid-state ion-selective electrode for dapoxetine hydrochloride (DAP) are examined. The Nernstian response of the electrode was evaluated by comparison with PVC-based liquid membrane and carbon paste electrodes. The PVC-free electrode is prepared by direct incorporation of dapoxetine-tetraphenyl borate (DAP–TPB) as a sensing element into a commercial nail varnish containing cellulose acetate propionate. The composite was applied onto a 3 mm diameter graphite disk electrode. The electrode exhibited a Nernstian slope of 56.0 mV/decade in the concentration range of 1 × 10−4 to 1 × 10−2 mol/L with an LOD of 2 × 10−5 mol/L. The electrode is independent of pH in the range of 2 to 6 and showed good selectivity for DAP with respect to a large number of inorganic cations and amino acids. Comparable Nernstian slope, sensitivity, pH range, and selectivity pattern were obtained with a PVC membrane and a carbon paste incorporating DAP–TPB as a sensing element and dioctylphthalate as a solvent mediator. The electrodes were used for the determination of DAP in pure solution and in tablets without extraction with high accuracy and precision (RSD ≤ 2%). The nail varnish solid-state electrode is simple, economical, and rapid when compared with PVC membrane and carbon paste electrodes.

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