Potentiometric sensors

Ebook "Environmental analysis by electrochemical sensors and biosensors - Volume 1: Fundamentals" presents an exhaustive overview of electrochemical sensors and biosensors for the analysis and monitoring of the most important analytes in the environmental field, in industry, in treatment plants and in environmental research. The chapters give the reader a comprehensive, state-of-the-art picture of the field of electrochemical sensors suitable to environmental analytes, from the theoretical principles of their design to their implementation, realization and application.

714p tudohanhtau1006 29-03-2024 2 1   Download

Polycation-sensitive membrane electrodes based on dinonylnaphthalene sulfonate (DNNS) were examined for the determination of some polyanions, namely xanthan (Xanth), alginate (Alg), carboxymethyl cellulose (CMC), and carrageenan (Carr). The potentiometric titrations of polyanionic analytes yielded sharp end points and correlative stoichiometries. After the determinations were successfully performed in saline, these polyanions were also determined in some food products consumed in Bolu (Turkey).

8p langthannam 29-12-2021 7 0   Download

Silver(I)-selective sensors were prepared from a solid-state contact polyvinyl chloride (PVC) membrane. (Z)-2-(2-((3-(2-hydroxyphenyl)-5-(p-tolyl)-1H -pyrrol-2-yl)imino)-5-(p-tolyl)-2H -pyrrol-3-yl)phenol was synthesized as an ionophore molecule and embedded in the silver(I)-selective PVC membrane composition. The sensor was also successfully applied in the analysis of real water samples. In real water samples prepared by standard addition method, recoveries in the range of 82.30%–95.15% were obtained.

10p tudichquannguyet 29-11-2021 6 3   Download

The study aims to develop simple, sensitive, and selective methods for detecting methylphenidate in its bulk, dosage form and human urine. Sensing materials include β-cyclodextrin (β-CD), γ-cyclodextrin (γ-CD), and 4-tertbutylcalix[8] arene as ionophores or electroactive materials have been used for construction of sensors 1, 2, and 3, respectively.

10p vijiraiya2711 27-05-2020 17 0   Download

The current work deals with fabrication and validation of a new highly Fe3+ selective sensor based on benzo-18crown-6 (b-18C6) using the potentiometric method. The proposed sensor revealed satisfactory performance for quantitative evaluation of Fe3+ trace amount in environmental samples.

12p vijiraiya2711 27-05-2020 14 0   Download

New rapid, sensitive and simple electrometric method was developed to determine sertraline hydrochloride (Ser-Cl) in its pure raw material and pharmaceutical formulations. Membrane sensors based on heteropolyacids as ion associating material were prepared. Silicomolybdic acid (SMA), silicotungstic acid (STA) and phosphomolybdic acid (PMA) were used. The slope and limit of detection are 50.00, 60.00 and 53.24 mV/decade and 2.51, 5.62 and 4.85 lmol L1 for Ser-ST, Ser-PM and Ser-SM membrane sensors, respectively. Linear range is 0.01–10.00 for the three sensors.

11p trinhthamhodang1 16-11-2019 22 1   Download