Rectifying effect for ion-selective electrodes with conducting polymer solid contact

2018 ◽  
Vol 246 ◽  
pp. 246-253 ◽  
Author(s):  
Anna Kisiel ◽  
Agata Michalska ◽  
Krzysztof Maksymiuk
Keyword(s):  
Conducting Polymer ◽  
Ion Selective Electrodes ◽  
Solid Contact

Optimization of capacitance of conducting polymer solid contact in ion-selective electrodes

2016 ◽  
Vol 187 ◽  
pp. 397-405 ◽  
Author(s):  
Żaneta Pławińska ◽  
Agata Michalska ◽  
Krzysztof Maksymiuk
Keyword(s):  
Conducting Polymer ◽  
Ion Selective Electrodes ◽  
Solid Contact

scholarly journals Pre-Polarized Hydrophobic Conducting Polymer Solid-Contact Ion-Selective Electrodes with Improved Potential Reproducibility

2017 ◽  
Vol 89 (4) ◽  
pp. 2598-2605 ◽  
Author(s):  
Ning He ◽  
Soma Papp ◽  
Tom Lindfors ◽  
Lajos Höfler ◽  
Rose-Marie Latonen ◽  
...  
Keyword(s):  
Conducting Polymer ◽  
Ion Selective Electrodes ◽  
Solid Contact

Ion-selective Electrodes with 3D Nanostructured Conducting Polymer Solid Contact

2015 ◽  
Vol 28 (4) ◽  
pp. 778-786 ◽  
Author(s):  
Júlia Szűcs ◽  
Tom Lindfors ◽  
Johan Bobacka ◽  
Róbert E. Gyurcsányi
Keyword(s):  
Conducting Polymer ◽  
Ion Selective Electrodes ◽  
Solid Contact

scholarly journals 3D-printed manifold integrating solid contact ion-selective electrodes for multiplexed ion concentration measurements in urine

Talanta ◽  
2021 ◽  
pp. 122491
Author(s):  
Marek Dębosz ◽  
József Kozma ◽  
Radosław Porada ◽  
Marcin Wieczorek ◽  
Justyna Paluch ◽  
...  
Keyword(s):  
Ion Concentration ◽  
Ion Selective Electrodes ◽  
Solid Contact ◽  
3D Printed ◽  
Concentration Measurements

scholarly journals Potentiometric Carboxylate Sensors Based on Carbazole-Derived Acyclic and Macrocyclic Ionophores

Chemosensors ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 4
Author(s):  
Ville Yrjänä ◽  
Indrek Saar ◽  
Mihkel Ilisson ◽  
Sandip A. Kadam ◽  
Ivo Leito ◽  
...  
Keyword(s):  
Detection Limit ◽  
Vinyl Chloride ◽  
Anion Exchanger ◽  
Linear Range ◽  
Ph Sensitivity ◽  
Ion Selective Electrodes ◽  
Solid Contact ◽  
Response Characteristics ◽  
Potentiometric Response ◽  
Poly Vinyl Chloride

Solid-contact ion-selective electrodes with carbazole-derived ionophores were prepared. They were characterized as acetate sensors, but can be used to determine a number of carboxylates. The potentiometric response characteristics (slope, detection limit, selectivity, and pH sensitivity) of sensors prepared with different membrane compositions (ionophore, ionophore concentration, anion exchanger concentration, and plasticizer) were evaluated. The results show that for the macrocyclic ionophores, a larger cavity provided better selectivity. The sensors exhibited modest selectivity for acetate but good selectivity for benzoate. The carbazole-derived ionophores effectively decreased the interference from lipophilic anions, such as bromide, nitrate, iodide, and thiocyanate. The selectivity, detection limit, and linear range were improved by choosing a suitable plasticizer and by reducing the ionophore and anion exchanger concentrations. The influence of the electrode body’s material upon the composition of the plasticized poly(vinyl chloride) membrane, and thus also upon the sensor characteristics, was also studied. The choice of materials for the electrode body significantly affected the characteristics of the sensors.

scholarly journals Ion-to-electron capacitance of single-walled carbon nanotube layers before and after ion-selective membrane deposition

2021 ◽  
Vol 188 (5) ◽  
Author(s):  
Elena Zdrachek ◽  
Eric Bakker
Keyword(s):  
Carbon Nanotube ◽  
Ion Selective Electrodes ◽  
Solid Contact ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Essential Step ◽  
Before And After ◽  
Selective Membrane ◽  
High Potential Stability ◽  
Potential Stability

AbstractThe capacitance of the ion-to-electron transducer layer helps to maintain a high potential stability of solid-contact ion-selective electrodes (SC-ISEs), and its estimation is therefore an essential step of SC-ISE characterization. The established chronopotentiometric protocol used to evaluate the capacitance of the single-walled carbon nanotube transducer layer was revised in order to obtain more reliable and better reproducible values and also to allow capacitance to be measured before membrane deposition for electrode manufacturing quality control purposes. The capacitance values measured with the revised method increased linearly with the number of deposited carbon nanotube–based transducer layers and were also found to correlate linearly before and after ion-selective membrane deposition, with correlation slopes close to 1 for nitrate-selective electrodes, to 0.7 and to 0.5 for potassium- and calcium-selective electrodes. Graphical abstract

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