Dysprosium(III) Ion-Selective Electrochemical Sensor Based on 6-Hydrazino-1,5-diphenyl-6,7-dihydropyrazolo[3,4-d]pyrimidine-4(5H)-imine

2007 ◽  
Vol 72 (9) ◽  
pp. 1189-1206 ◽  
Author(s):  
Hassan Ali Zamani ◽  
Mohammad Reza Ganjali ◽  
Nasim Seifi
Keyword(s):  
Heavy Metal Ions ◽  
Alkaline Earth ◽  
Fast Response ◽  
Sensor Response ◽  
Indicator Electrode ◽  
Selective Electrode ◽  
Membrane Sensor ◽  
Sensing Material ◽  
Ph Range

A Dy(III) ion-selective electrode based on 6-hydrazino-1,5-diphenyl-6,7-dihydropyrazolo[3,4-d]pyrimidine-4(5H)-imine (HDDPI) as an excellent sensing material was developed. The sensor exhibits a Nernstian behavior (a slope of 19.6 ± 0.3 mV per decade) over a wide concentration range (from 1.0 × 10-1 to 8.0 × 10-7 M Dy) with a detection limit of 4.2 × 10-7 M. The sensor response is independent of pH of the solution in the pH range 3.5-8.3. The sensor possesses the advantages of short conditioning time, fast response time (<10 s) and in particular, good selectivity and sensitivity to the dysprosium ion in the presence of a variety of cations, including alkali, alkaline earth, transition and heavy metal ions. The sensor also showed a great enhancement in selectivity coefficients for dysprosium ions, in comparison with the formerly mentioned dysprosium sensors. The electrode can be used for at least 10 weeks without any considerable divergence in the potentials. The proposed electrode was successfully used as an indicator electrode in potentiometric titration of Dy(III) ions with EDTA. The membrane sensor was also used in the determination of concentration of F- ions in some mouth washing solutions and in the Dy3+ recovery from solution.

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 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.

New Polymeric Membrane Sensor Doped with N,N’-Bis(benzoin)-1,2-Phenylenediamine for Selective Determination of Aluminum

2012 ◽  
Vol 466-467 ◽  
pp. 336-341 ◽  
Author(s):  
Xin Lu Liu ◽  
Bin Xie ◽  
Xun Hai Pan ◽  
Kang Quan Qiao ◽  
Ying Wang
Keyword(s):  
Fast Response ◽  
Polymeric Membrane ◽  
Indicator Electrode ◽  
Response Mechanism ◽  
Neutral Carrier ◽  
Membrane Sensor ◽  
Selective Determination ◽  
Impedance Technique ◽  
Ph Range

A new polymeric membrane sensor for Al3+based on bis(benzoin)-1,2-phenylenediamine as a neutral carrier was investigated. The proposed sensor exhibits a near-Nernstian response for Al3+over a wide linear range of 3.0×10-7to 1.0×10-1mol/L, with a detection limit of 1.0×10-7mol/L and a slope of 19.7±0.3 mV/decade. The sensor displays a good selectivity toward Al3+over other cations in pH range of 2.5 to 4.0. It has relatively fast response time (8 s) and can be used at least for 3 months without considerable divergence in potential. The response mechanism was discussed in view of the A.C. impedance technique. It was successfully used as an indicator electrode in the determination of aluminum in real samples.

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 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 Potentiometric Determination of Prednisolone in Pharmaceutical Formulations

2021 ◽  
Vol 7 (3) ◽  
pp. 742-748
Author(s):  
A. Zaki Gehan ◽  
M.E. Hassouna Mohammed
Keyword(s):  
Detection Limit ◽  
Linear Response ◽  
Pharmaceutical Formulations ◽  
Fast Response ◽  
Indicator Electrode ◽  
Selective Electrode ◽  
Sodium Tetraphenyl Borate ◽  
Tetraphenyl Borate ◽  
Borate Solution

In this present work, a prednisolone ion selective electrode (PRED-ISE) has been developed. The electrode shows linear response towards prednisolone in the range 3.0×10−6 – 8.6×10−3 M with a detection limit of 2.5×10−6. PRED-ISE was used as an indicator electrode for the potentiometric titration of different concentrations of standard prednisolone against standardized sodium tetraphenyl borate solution and in tablets. The electrode manifests advantages of low resistance, fast response and, most importantly, good selective relativity to a variety of other cations.

scholarly journals Synthesis of a New Calix[4]Arene and Its Application in Construction of a Highly Selective Silver Ion-Selective Membrane Electrode

2009 ◽  
Vol 2009 ◽  
pp. 1-5 ◽  
Author(s):  
Saeed Taghvaei-Ganjali ◽  
Reza Zadmard ◽  
Masoumeh Zeyaei ◽  
Kabeh Rahnama ◽  
Farnoush Faridbod ◽  
...  
Keyword(s):  
Response Time ◽  
Potentiometric Titration ◽  
Fast Response ◽  
Pvc Membrane ◽  
Indicator Electrode ◽  
Membrane Electrode ◽  
Membrane Sensor ◽  
Selective Membrane ◽  
Ph Range ◽  
Pvc Membrane Sensor

A PVC membrane sensor for Ag (I) ions has been prepared. The membrane has 5, 11, 17, 23-tetra-tert-butyl-25-(3-N, N-diethyldithio carbamoylpropoxy)-26,27,28-tris-propoxy calix[4]arene (CAD) as a carrier. It was found that the sensor exhibits a Nernstian response for Ag+ ions over a wide concentration range (10−2–10−6 M). Additionally, it illustrates a fast response time (about 5 seconds), and it can be used for at least 2 months without any considerable divergence in potentials. The nature of the plasticizer, the additive, the concentration of internal solutions in the electrodes, and the composition of the membrane were investigated. Furthermore, the suggested membrane electrode revealed good selectivities for Ag+ over a variety of other metal cations, and it could be used in the pH range of 3.0–7.0. Eventually, it was successfully applied as an indicator electrode for the potentiometric titration of Ag+ ion with NaCl.

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.

scholarly journals Mg(II) Selective PVC Membrane Electrode Based on Methyl Phenyl Semicarbazone as an Ionophore

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Sulekh Chandra ◽  
Kusum Sharma ◽  
Adarsh Kumar
Keyword(s):  
High Sensitivity ◽  
Fast Response ◽  
Pvc Membrane ◽  
Indicator Electrode ◽  
Membrane Electrode ◽  
Trivalent Cation ◽  
Selective Electrode ◽  
Pvc Membrane Electrode ◽  
Ph Range ◽  
Methyl Phenyl

A PVC-membrane-based Mg(II) selective electrode was constructed using methyl phenyl semicarbazone (MPS) as a neutral carrier. The sensor exhibits a Nernstian response for Mg(II) ion over a wide concentration range1.0×10-8  to  1.0×10-1 M with the slope of 28.4 mV/per decade having detection limit1.7×10-9 M. It was relatively a fast response time (<10 s for concentration≥1.0×10-3and<15 s for concentration of≥1.0×10-6 M) and can be used for 8 months without any considerable divergence in potentials. The proposed sensor revealed relatively good selectivity and high sensitivity for Mg(II) over a mono-, di-, and trivalent cation and can be used in a pH range of 1.0–9.5. It was also successfully used as an indicator electrode in potentiometer titration and in the analysis of concentration of magnesium in various real samples.

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.

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