All-Solid-State Potentiometric Sensors for Potassium and Sodium Based on Poly(pyrrole) Solid Contact

1997 ◽  
Vol 57 (1) ◽  
pp. 59-64 ◽  
Author(s):  
A. Michalska ◽  
A. Hulanicki ◽  
A. Lewenstam
Keyword(s):  
Solid State ◽  
Potentiometric Sensors ◽  
Solid Contact

All-solid-state potentiometric sensors for ascorbic acid by using a screen-printed compatible solid contact

2004 ◽  
Vol 502 (1) ◽  
pp. 15-22 ◽  
Author(s):  
Panayotis G. Veltsistas ◽  
Mamas I. Prodromidis ◽  
Constantinos E. Efstathiou
Keyword(s):  
Ascorbic Acid ◽  
Solid State ◽  
Potentiometric Sensors ◽  
Solid Contact ◽  
Screen Printed

scholarly journals All Solid-State Poly (Vinyl Chloride) Membrane Potentiometric Sensor Integrated with Nano-Beads Imprinted Polymers for Sensitive and Rapid Detection of Bispyribac Herbicide as Organic Pollutant

Molecules ◽  
2019 ◽  
Vol 24 (4) ◽  
pp. 712 ◽  
Author(s):  
Nashwa Abdalla ◽  
Maha Youssef ◽  
H. Algarni ◽  
Nasser Awwad ◽  
Ayman Kamel
Keyword(s):  
Solid State ◽  
Electrochemical Impedance ◽  
Organic Pollutant ◽  
Solid Substrate ◽  
Hplc Method ◽  
Potentiometric Sensors ◽  
Pvc Membrane ◽  
Aliquat 336 ◽  
Solid Contact ◽  
Selective Membrane

All-solid-state potentiometric sensors were prepared by using polyaniline (PANI) as the solid contact material. A film of PANI (thickness approximately being 0.25 µm) was deposited on a solid substrate (carbon screen printed platform). The PANI layer was subsequently coated with an ion-selective membrane (ISM) containing uniform-sized molecularly imprinted nanoparticles to produce a solid-contact ion-selective electrode (SC/ISE) for bispyribac herbicide (sensor I). In addition, aliquat 336 was also used as an ion exchanger in plasticized PVC membrane (sensor II). The proposed sensors revealed a remarkably improved sensitivity towards bispyribac ions with anionic slopes of −47.8 ± 1.1 (r2 = 0.9995) and −44.4 ± 1.4 (r2 = 0.9997) mV/decade over a linear range 1.0 × 10−2–8.6 × 10−6 M, 1.0 × 10−2–9.0 × 10−6 M and detection limits of 1.33 and 1.81 µg/mL for sensors I and II, respectively.Selectivity of both sensors is significantly high for different common pesticides and inorganic anions. The potential stability of the SC/ISEs was studied using chronopotentiometry. Electrochemical impedance spectrometry was used to understand the charge-transfer mechanisms of the different types of ion-selective electrodes studied. The impedance response of the electrodes was modelled by using equivalent electrical circuits. The sensors were used for a direct measurement of the bispyribac content in commercial herbicide formulations and soil samples collected from agricultural lands planted with rice and sprayed with bispyribac herbicide. The results agree fairly well with data obtained using HPLC method.

scholarly journals All-Solid-State Sodium-Selective Electrode with a Solid Contact of Chitosan/Prussian Blue Nanocomposite

Sensors ◽  
2017 ◽  
Vol 17 (11) ◽  
pp. 2536 ◽  
Author(s):  
Tanushree Ghosh ◽  
Hyun-Joong Chung ◽  
Jana Rieger
Keyword(s):  
Solid State ◽  
Prussian Blue ◽  
Solid Contact ◽  
Selective Electrode

Arrays of solid contact potentiometric sensors for separate determination of some cephalosporin antibiotics

2021 ◽  
Vol 87 (5) ◽  
pp. 5-13
Author(s):  
E. G. Kulapina ◽  
A. E. Dubasova ◽  
O. I. Kulapina ◽  
V. D. Ankina
Keyword(s):  
Response Time ◽  
Reference Model ◽  
Complex Compounds ◽  
Potentiometric Sensors ◽  
Separate Determination ◽  
Solid Contact ◽  
Active Components ◽  
Membrane Surfaces ◽  
Cephalosporin Antibiotics

Arrays of potentiometric sensors including developed solid-contact unmodified and modified sensors based on tetradecylammonium associates with complex compounds of silver (1) and some β-lactam antibiotics (cefazoline, cefuroxime, cefotaxime (n = 3 – 6)) are proposed; polyaniline and copper oxide being modifiers. The main electroanalytic properties of the sensors are determined (the range of the determined concentrations in antibiotic solutions 1 × 10–4 – 0.1 M, 46.3 < S < 48, Cmin = n × 10–5 М, response time 4 – 10 sec, potential drift 4 – 6 mV/day, service life — 2 months). It is shown that modification of the membrane surfaces brings the steepness of the electrode functions to Nernst-values for single-charged ions of the antibiotics under study; reduces the response time and the detection limits, the linearity intervals of the electrode functions being the same. The potentiometric selectivity coefficients of unmodified and modified sensors based on different electrode active components (EAC) to the studied cephalosporins in the presence of interfering antibiotics are close to unity; cross sensitivity parameters for the considered sensors (the average slope of the electrode function of the sensor Sav, the unselectivity factor F, and the reproducibility factor K) are 46.3 < S (mV/pC) < 48; 0.85 < F < 0.90; 144 < K < 170, respectively. Application of sensors in the multisensory analysis of model mixtures of cephalosporin antibiotics is shown. Method of artificial neural networks (ANN) is used for processing of analytical signals. The correctness of the determination is carried out using «spike tests» on the reference model mixtures (the relative error of the determination does not exceed 12 %).

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.

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