Redox probe-based amperometric sensing for solid-contact ion-selective electrodes

Talanta ◽  
2021 ◽  
pp. 123114
Author(s):  
Xiaotong Sun ◽  
Tanji Yin ◽  
Ziping Zhang ◽  
Wei Qin
Keyword(s):  
Ion Selective Electrodes ◽  
Solid Contact ◽  
Redox Probe ◽  
Amperometric Sensing

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

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

scholarly journals Robust fabrication of nanomaterial-based all-solid-state ion-selective electrodes

RSC Advances ◽  
2019 ◽  
Vol 9 (29) ◽  
pp. 16713-16717 ◽  
Author(s):  
Kaikai Liu ◽  
Xiaojing Jiang ◽  
Yuehai Song ◽  
Rongning Liang
Keyword(s):  
Solid State ◽  
Ion Selective Electrodes ◽  
Solid Contact ◽  
First Time

For the first time, a general and facile approach for the robust fabrication of nanomaterial-based solid contact ISEs is reported.

Ordered mesoporous carbon sphere-based solid-contact ion-selective electrodes

2019 ◽  
Vol 54 (21) ◽  
pp. 13674-13684 ◽  
Author(s):  
Zidengya Jiang ◽  
Xin Xi ◽  
Shi Qiu ◽  
Dongqing Wu ◽  
Wei Tang ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Ordered Mesoporous Carbon ◽  
Ion Selective Electrodes ◽  
Carbon Sphere ◽  
Solid Contact ◽  
Ordered Mesoporous

scholarly journals Solid-Contact Ion-Selective Electrodes: Response Mechanisms, Transducer Materials and Wearable Sensors

Membranes ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 128 ◽  
Author(s):  
Yan Lyu ◽  
Shiyu Gan ◽  
Yu Bao ◽  
Lijie Zhong ◽  
Jianan Xu ◽  
...  
Keyword(s):  
Biological Fluids ◽  
Wearable Sensors ◽  
Ion Selective Electrodes ◽  
Double Layer Capacitance ◽  
Solid Contact ◽  
General Picture ◽  
Non Invasive ◽  
Potential Stability ◽  
Electric Double Layer Capacitance ◽  
Redox Capacitance

Wearable sensors based on solid-contact ion-selective electrodes (SC-ISEs) are currently attracting intensive attention in monitoring human health conditions through real-time and non-invasive analysis of ions in biological fluids. SC-ISEs have gone through a revolution with improvements in potential stability and reproducibility. The introduction of new transducing materials, the understanding of theoretical potentiometric responses, and wearable applications greatly facilitate SC-ISEs. We review recent advances in SC-ISEs including the response mechanism (redox capacitance and electric-double-layer capacitance mechanisms) and crucial solid transducer materials (conducting polymers, carbon and other nanomaterials) and applications in wearable sensors. At the end of the review we illustrate the existing challenges and prospects for future SC-ISEs. We expect this review to provide readers with a general picture of SC-ISEs and appeal to further establishing protocols for evaluating SC-ISEs and accelerating commercial wearable sensors for clinical diagnosis and family practice.

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