Reactivity of NASICON with water and interpretation of the detection limit of a NASICON based Na+ ion selective electrode

Talanta ◽  
1999 ◽  
Vol 48 (2) ◽  
pp. 293-303 ◽  
Author(s):  
F Mauvy
Keyword(s):  
Detection Limit ◽  
Ion Selective Electrode ◽  
Selective Electrode

scholarly journals Simultaneous Analysis of Ammonium and Nitrate Ions Levels with Potentiometric Multi-commutation Flow System Method

2021 ◽  
Vol 22 (1) ◽  
pp. 69
Author(s):  
Fajrin Nurul Hikmah ◽  
Tri Mulyono ◽  
Zulfikar Zulfikar
Keyword(s):  
Detection Limit ◽  
Flow System ◽  
Ion Selective Electrode ◽  
Ammonium Ion ◽  
Selective Electrode ◽  
Nitrate Ion ◽  
Nitrate Ions ◽  
Limit Value ◽  
System Method ◽  
Recovery Percentage

This study aims to develop a multi-commutation flow system method for simultaneous determination of ammonium ion and nitrate ion using two detectors, namely ammonium ion selective electrode and nitrate ion selective electrode. The multi-commutation flow system method uses two three way selenoide valves to adjust the sample flow and ISA solution. The selenoid valve alternately flows the sample and ISA solution to the ion selective electrode. Flow control by three way selenoid valves is controlled by LabView which is programmed in the computer. The computer is connected with Arduino and a relay that functions as an on-off switch on the three way valve selenoid. This method is then applied to measure the levels of ammonium ions and nitrate ions in well water samples. The performance of the multi-commutation flow system determined includes linearity, limit detection, sensitivity, repeatability, and recovery test. Ammonium analysis results show good performance with several criteria. Ammonium linearity value is 0,9991, ammonium detection limit value is 2,23 × 10-5 M, sensitivity of ion selective electrode ammonium is 45,39 mV per decade, the repeability value is less than 2% and the recovery percentage of ammonium is 115%. While the results of the nitrate analysis showed a linearity value of 0,9937, a nitrate detection limit value of 1,31 × 10-5 M, sensitivity of the ion selective electrode nitrate of -110,58 mV per decade, a repeatability value of less than 2% and a recovery percentage of 87% nitrate. Keywords: Flow Analysis, multi-commutation, ammonium, nitrat, simultaneous.

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.

The detection limit of the orion iodide/silver ion-selective electrode

1976 ◽  
Vol 85 (1) ◽  
pp. 47-53 ◽  
Author(s):  
J. Kontoyannakos ◽  
G.J. Moody ◽  
J.D.R. Thomas
Keyword(s):  
Detection Limit ◽  
Silver Ion ◽  
Ion Selective Electrode ◽  
Selective Electrode

A new approach for decreasing the detection limit for a ketamine(I) ion-selective electrode

2015 ◽  
Vol 49 ◽  
pp. 445-451 ◽  
Author(s):  
Hazem M. Abu Shawish ◽  
Hassan Tamous ◽  
Salman M. Saadeh ◽  
Khalid I. Abed-Almonem ◽  
Osama Al khalili
Keyword(s):  
Detection Limit ◽  
Ion Selective Electrode ◽  
Selective Electrode ◽  
New Approach

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.

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