Multielectrode potentiometry in a one-drop sample

Błaż, Teresa; Baś, Bogusław; Kupis, J.; Migdalski, Jan; Lewenstam, Andrzej

doi:10.1016/j.elecom.2013.05.021

Cited by 22 publications

(11 citation statements)

References 8 publications

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“…From a clinical perspective, the solid‐contact ion‐sensors and the reference electrodes open a new area of exploration in bio‐medical analysis. Only recently, the novel multielectrode platforms have been shown to be applicable in the measurement of ions in one drop of blood placed on microscope glass‐cover slip 54. Two such multielectrode platforms form the measurement system that is able to monitor transmembrane fluxes through a living enthothelial cell monolayer, which opens new perspective in physiology 55.…”

Section: The Prospects For Use Of New Ion‐sensorsmentioning

confidence: 99%

Routines and Challenges in Clinical Application of Electrochemical Ion‐Sensors

Lewenstam

2014

Electroanalysis

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Section: The Prospects For Use Of New Ion‐sensorsmentioning

confidence: 99%

Routines and Challenges in Clinical Application of Electrochemical Ion‐Sensors

Lewenstam

2014

Electroanalysis

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“…An example of this type of tools is the miniature sensors platforms, fabricated in the all-solid-state technology [2][3][4][5][6][7][8], equipped with a miniature reference electrode without internal liquid electrolyte. The small size of potentiometric sensors, use of readily available and inexpensive materials allow for selective analysis in a small sample volume [9,10]. One of the major problems related to the recent use of the potentiometric integrated sensors systems (PISSs) is calibration [11].…”

Section: Introductionmentioning

confidence: 99%

The computational methods in the development of a novel multianalyte calibration technique for potentiometric integrated sensors systems

Urbanowicz

Pijanowska

Jasiński

et al. 2019

J Solid State Electrochem

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In recent years, integration and miniaturization of ion-selective electrodes (ISEs) have brought many benefits resulting in the possibility of simultaneous determination of the ions concentration in small volume samples. One of the key problems related to the preparation of potentiometric integrated sensors systems (PISSs) is a calibration procedure due to the necessity to calibrate each particular sensor separately. The main aim of the research was to develop a novel calibration method for PISSs fabricated with the use of an all-solid-state technology, which has been compared with other types of sensor calibration technique. The proposed algorithm concerns the method of calibration solutions composition determination for miniature ion-selective sensors before measuring in biological samples especially human saliva samples. This article also compares the parameters of ionselective sensors for two types of PISSs, including ISEs based on gold (Au) and glassy carbon (GC) electrodes. In addition, a series of measurements was performed using PISS with Au-ISEs in samples of human saliva, which were preceded by different types of sensor calibration and compared with the results obtained with the clinical analyzer. Moreover, the effect of the viscosity of calibration solutions on the ISE parameters and the lifetime of the sensors were investigated.

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“…The platform contained five gold wire electrodes (Au 99.99 obtained from Johnson Matthey Company) with a diameter of 0.8 mm. The external diameter of the epoxy body was 8 mm. − All the gold discs were electrochemically covered with silver, and the REF-Br-photo membranes and potassium-selective membranes were deposited by solution cast on selected discs. Negligible potential changes were recorded for both electrodes with REF-Br-photo membranes used and close to theoretical potential changes were recorded for K-ISE, Figure S-7.…”

Section: Results and Discussionmentioning

confidence: 99%

All-Solid-State Reference Electrode with Heterogeneous Membrane

2016

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Novel reference electrodes with a solid contact coated by a heterogeneous polymer membrane are described. The electrodes are obtained using Ag nanoparticles, AgBr, KBr suspended in tetrahydrofuran solution of PVC and DOS and deposited on Ag substrate, or another substrate covered with Ag, by drop casting. After a short period of soaking in a KBr solution, stable and reproducible formal potentials of -157 ± 2 mV (vs Ag/AgCl/3 M KCl) were observed, and the solid-contact reference electrodes were ready to use. It is shown that the described reference electrodes are relatively insensitive to the changes in the sample matrix, the concentrations of ions, the pH and the redox potential. These electrodes can also be fabricated in miniaturized form, and thus used to produce miniaturized multielectrode probes.

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Multielectrode potentiometry in a one-drop sample

Cited by 22 publications

References 8 publications

Routines and Challenges in Clinical Application of Electrochemical Ion‐Sensors

Routines and Challenges in Clinical Application of Electrochemical Ion‐Sensors

The computational methods in the development of a novel multianalyte calibration technique for potentiometric integrated sensors systems

All-Solid-State Reference Electrode with Heterogeneous Membrane

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