scholarly journals Gadolinium(III) Ion-Selective Electrode Based on 3-Methyl-1H-1,2,4-triazole-5-thiol

2012 ◽  
Vol 9 (1) ◽  
pp. 308-312 ◽  
Author(s):  
Hassan Ali Zamani ◽  
Hossein Behmadi
Keyword(s):  
Detection Limit ◽  
Response Time ◽  
Potentiometric Sensor ◽  
Ion Selective Electrode ◽  
Selective Electrode ◽  
Short Response Time ◽  
Sodium Tetraphenyl Borate ◽  
Tetraphenyl Borate ◽  
Ph Range

The 3-methyl-1H-1,2,4-triazole-5-thiol (MTH) was used as a suitable ionophore for fabrication of a new gadolinium(III) ion selective potentiometric sensor. Nitrobenzene (NB) was used as plasticizing solvent mediator and sodium tetraphenyl borate (NaTPB) as an anion excluder. It displays a Nernstian response (19.8± 0.4 mV/decade) in the concentration range of 1.0×10-7to 1.0×10-2M with the detection limit of 7.3×10-8M. The sensor has a very short response time (<10s) and can be used the pH range of 2.9-8.4. electrode was successfully applied as an indicator for gadolinium determination in titration with EDTA.

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.

High Sensitivity Sulphite Membrane Selective Electrode and its Application

2021 ◽  
Vol 43 (4) ◽  
pp. 451-451
Author(s):  
Sukru Kalayci Sukru Kalayci
Keyword(s):  
Detection Limit ◽  
Confidence Interval ◽  
Response Time ◽  
Ph Value ◽  
High Sensitivity ◽  
Ion Selective Electrode ◽  
Sulfide Concentration ◽  
Selective Electrode ◽  
Perfluorooctanesulfonic Acid ◽  
Anions And Cations

In this study, the new sulphite sensitive ion-selective electrode (ISE) was prepared. The ISE was prepared from a combination of 5% perfluorooctanesulfonic acid (PFOS), 40% PVC and 55% dibutylphthalate (DBF).The sensitivity of the ISE to 1.0x10- 7-1.0x10-1 M sulphite concentration was 58 and#177; 4 mV. Electrode sensitivity was characterized. The response time of this electrode is short and 30 s. The lifetime of ISE was approximately 210 days when used five times a day. It was determined that it can work at any pH value. It is not sensitive to anions and cations that may be present in the determination medium. The detection limit of the electrode against the sulfide concentration was measured as 1.2x10-8 M. The amount of sulfites in dried apricots in Turkey, was measured with electrodes. Sulfite amount in dried apricot was determined as 2.328 and#177; 0.2417 mg / kg according to the average of 5 experiments and 95% confidence interval. The same sample was measured with DPP as 2.521 and#177; 0.2785.The validation of the obtained results in each case was proved by statistical “t” and “F” tests.

scholarly journals THE PREPARATION OF AN IODATE SELECTIVE ELECTRODE USING SILVER IODATE AS THE ACTIVE AGENT IN A CHITOSAN SUPPORT

2010 ◽  
Vol 7 (3) ◽  
pp. 284-287
Author(s):  
Ani Mulyasuryani ◽  
Qonitah Fardiyah ◽  
Rizki Sugiri
Keyword(s):  
Detection Limit ◽  
Response Time ◽  
Active Agent ◽  
Reference Electrode ◽  
Chitosan Solution ◽  
Precipitation Reaction ◽  
Selective Electrode ◽  
Cell Potential ◽  
Chitosan Membrane ◽  
Electrode Cell

The iodate-selective electrode based on the principle of precipitation reaction could be made by coating the platinum wire with silver iodate (AgIO3). In this research was carried out optimization the iodate-selective electrode using chitosan membrane as an AgIO3 support. The AgIO3 were added in the 2 mL 1% chitosan solution, is 0.5 to 2.5 % (w/v). The thickness of the membrane used is 6 to 12 µm. The electrode cell potential is measured against Ag/AgCl electrode as a reference electrode. The optimum electrode performance was at 2.0 % of AgIO3 with thickness a membrane of 10 µm. The iodate-selective electrode has a Nernstian factor is 52.96 mV/decade and a response time of 10 seconds. The concentration range was determined from 10-3 M to 10-1 M and the detection limit is 1.12 x 10-5 M.   Keywords:  Ion Selective Electrode, Iodate, Chitosan Membrane

scholarly journals A New method for ISE construction for methyl orange dyes and using for indirect determination of Amitriptyline Hydrochloried drug

2015 ◽  
Vol 12 (1) ◽  
pp. 188-196
Author(s):  
Baghdad Science Journal
Keyword(s):  
Methyl Orange ◽  
Response Time ◽  
Electrode Surface ◽  
Ion Pair ◽  
New Method ◽  
Ion Selective Electrode ◽  
Selective Electrode ◽  
Internal Solution ◽  
Indirect Determination

A new method for construction ion-selective electrode (ISE) by heating reaction of methyl orange with ammonium reineckate using PVC as plasticizer for determination methyl orange and determination Amitriptyline Hydrochloried drug by formation ion-pair on electrode surface . The characteristics of the electrode and it response as following : internal solution 10-4M , pH (2.5-5) ,temperature (20-30) and response time 2 sec. Calibration response for methyl orange over the concentrationrange 10-3 -10-9 M with R=0.9989 , RSD%=0.1052, D.O.L=0.315X10-9 MEre%=(-0.877- -2.76) , Rec%.=(97.230 -101.711) .

Solid-state ion selective electrode based on polypyrrole conducting polymer nanofilm as a new potentiometric sensor for Zn2+ ion

2012 ◽  
Vol 16 (10) ◽  
pp. 3315-3322 ◽  
Author(s):  
Reza Ansari ◽  
Ali Fallah Delavar ◽  
Ali Mohammad-khah
Keyword(s):  
Solid State ◽  
Conducting Polymer ◽  
Potentiometric Sensor ◽  
Ion Selective Electrode ◽  
Selective Electrode

Sulfide Ion-Selective Electrode as Potentiometric Sensor for Lead(II) Ion in Aqueous and Nonaqueous Medium

1980 ◽  
Vol 13 (12) ◽  
pp. 1013-1030 ◽  
Author(s):  
Nj. Radić ◽  
M. Milišić
Keyword(s):  
Potentiometric Sensor ◽  
Ion Selective Electrode ◽  
Nonaqueous Medium ◽  
Selective Electrode ◽  
Sulfide Ion

Fe3O4/rGO nanocomposite: synthesis and enhanced NOxgas-sensing properties at room temperature

RSC Advances ◽  
2016 ◽  
Vol 6 (43) ◽  
pp. 37085-37092 ◽  
Author(s):  
Ying Yang ◽  
Li Sun ◽  
Xiangting Dong ◽  
Hui Yu ◽  
Tingting Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Detection Limit ◽  
Response Time ◽  
Reduced Graphene Oxide ◽  
Room Temperature ◽  
Gas Sensing ◽  
High Sensitivity ◽  
Short Response Time ◽  
Reduced Graphene ◽  
Sensing Performance

Fe3O4nanoparticles-decorated reduced graphene oxide nanocomposites have been successfully synthesized using solvothermal-pyrolytic method. They have superior gas sensing performance with low detection limit, high sensitivity and short response time.

scholarly journals The Effect of pH and Concentration of KNO3 Solution to the Performance of Nd3+ Ion Selective Electrode Using HPMBP Ionophore

2018 ◽  
Vol 3 (3) ◽  
pp. 193
Author(s):  
Husain Sosidi ◽  
Buchari Buchari ◽  
Indra Noviandri
Keyword(s):  
Ion Selective Electrode ◽  
Selective Electrode ◽  
Buffer Solution ◽  
Potential Measurement ◽  
Ph Variation ◽  
Measurement Results ◽  
Optimum Ph ◽  
Electrode Method ◽  
Potentiometric Analysis ◽  
Ph Range

<p>The phenyl-3-methyl-4-benzoyl-5-pyrazolone (HPMBP) synthesized and characterized as ionophore in potentiometric analysis of ion selective electrode method (ISE) with polytetrafluoroethylene (PTFE) as the supporting phase. The pH and concentration of the ionic strength adjuster (ISA) were varied to know at the optimum pH and concentration of the ion-selective electrode (ESI) KNO<sub>3</sub>, thus potential Nd<sup>3+</sup> gives the best performance. Before use the PTFE membrane was immersed in a chloroform-HPMBP solution of 1.5-2.0% w/v for 24 h. The pH variation of the buffer solution was adjusted to the pH range of 2-10 using HCl and NaOH solutions, whereas the concentration of KNO<sub>3</sub> varies from 10<sup>-1</sup> to 10<sup>-3</sup> M. The concentration range of Nd<sup>3+</sup> is between 10<sup>-2</sup> and 10<sup>-7</sup> M. The electrode potential measurement results (E<sub>Nd</sub>) obtained the best performance value at pH 4 with KNO<sub>3</sub> concentration of 10<sup>-2</sup> M, sensitivity (S) 18.39 ± 1.2 mV/decade and response time less than 23 s.</p>

scholarly journals New lead-sensitive ion selective electrode with low detection limit

2013 ◽  
Vol 1 ◽  
pp. 05010
Author(s):  
C. Wardak ◽  
J. Lenik
Keyword(s):  
Detection Limit ◽  
Ion Selective Electrode ◽  
Selective Electrode ◽  
Low Detection Limit
Sign in / Sign up

Export Citation Format

Share Document