For the first time, a single-piece, all-solid-state ion-selective electrode was fabricated with carbon black supporting platinum nanoparticles (PtNPs-CB) and polymeric membrane. The PtNPs-CB, as an intermediate layer, drop-casted directly on solid substrate, then ionophore-doped solvent membrane added in order to form sensor. performance of newly developed electrodes evaluated basis potassium nitrate ions. stability electrical potential for examined by performing current-reversal...

The practical application of a novel, eco-friendly electrochemical sensor based on low-dimensional structures, spherical glassy carbon microparticles, and multiwall nanotubes is described. This sensor, modified with bismuth film, was used for the determination Cd(II) by anodic stripping voltammetric method. instrumental chemical factors influencing sensitivity procedure were thoroughly investigated their most favorable values selected (acetate buffer solution pH = 3 ± 0.1; 0.15 mmol L−1...

A platinum nanoparticles (PtNPs) layer is used for the first time as an ion-to-electron transducer in a solid-state ion-selective electrode (SC-ISE). The was prepared by adding PtNPs intermediate between ionophore-doped solvent polymeric membrane and electrical conductor. characterized high resolution transmission electron microscopy, selected area diffraction X-ray photoelectron spectroscopy. stability of potential new solid-contact examined performing current-reversal chronopotentiometry...

A new type of potentiometric solid-state ion-selective electrode (SS-ISE) has been fabricated with an intermediate layer made 7,7,8,8-tetracyanoquinodimethane (TCNQ) or its ion-radical salts and ionophore-based membrane. To show the influence TCNQ on selectivity, sodium- potassium-sensitive membranes were applied. good Nernstian response a slope 59.24 mV/dec in range from 10(-6.5) to 10(-1) M KCl 58.68 (10(-6) NaCl) was observed. The interfacial water film assessed by aqueous-layer test...

A new voltammetry method for the highly sensitive antibacterial drug ciprofloxacin (CIP) is presented using glassy carbon electrodes modified with hierarchical electrospun nanofibers NiCo nanoparticles (eCNF/CNT/NiCo-GCE). The use of a electrode in form (eCNF/CNT/NiCo) led to an LOD value as low 6.0 µmol L−1 measurement sensitivity 3.33 µA L−1. described procedure was successfully applied CIP determination samples complex matrices, such urine or plasma, and also pharmaceutical products...

This paper presents the application of a multi-sensor with renewable surface based on carbon black paste modified ruthenium dioxide hydrate for monitoring concentration changes four ionic compounds (nitrate, ammonium, sodium, and calcium). By combining these into one sensor body, analyses can be performed simultaneously, single standard curve, small number available samples. The electrodes were characterized by determining both their electrical parameters, using methods such as...

Abstract The new cyclic renewable mercury film silver based electrode (Hg(Ag)FE), applied for the determination of uranium(VI) traces using differential pulse adsorptive cathodic stripping voltammetry (DP AdCSV) is presented. Hg(Ag)FE with a surface area adjustable from 1.1 to 12 mm 2 characterized by very good reproducibility (≤2%) and long‐term stability (more than thousand measurement cycles). mechanical refreshing realized in simple constructed device, time shorter 1–2 seconds. effects...

The possibility of improving the selectivity solid-state nitrate-selective electrodes by application tetrathiafulvalene (TTF) or its nitrate salt (TTF(NO3)) as an intermediate layer between electrical conductor and a polymeric membrane is demonstrated. analytical performance was investigated during potentiometric measurements. Fabricated sensors displayed Nernstian slope (−58.85 mV/decade in range from 10−5.0 to 10−1 M −59.36 10−6.0 for TTF− TTF(NO3)−modified respectively), repeatable...

A new approach is presented for the design of ion selective electrodes. Ruthenium dioxide nanoparticles were incorporated into solid-contact electrodes, and their properties studied case pH-selective The use RuO2 shown to significantly improve potentiometric response, while no redox response observed. results in a Nernstian slope (59 mV/decade) towards hydrogen ions over wide linear range (pH 2 12). obtained by chronopotentiometry reveal small resistance, capacitance as high 1.12 mF. This...

Ruthenium dioxide occurs in two morphologically varied structures: anhydrous and hydrous form; both of them were studied the scope this work applied as mediation layers ion-selective electrodes. The differences between electrochemical properties those materials underlie their diverse structure hydration properties, which was demonstrated paper. One main is occurrence structural water RuO2•xH2O, creates a large inner surface available for ion transport shown to be favorable feature context...

This paper presents new paste ion-selective electrodes for the determination of nitrate ions in soil. The pastes used construction are based on carbon black doped with transition metal oxides: ruthenium, iridium, and polymer-poly(3-octylthiophene-2,5-diyl). proposed were electrically characterized by chronopotentiometry broadly potentiometrically. tests showed that admixtures increased electric capacitance to 470 μF ruthenium-doped paste. polymer additive positively affects stability...

Potentiometric sensor platform based on a carbon black modified ion-selective electrodes with very stable potential signal is presented. The were obtained basing the addition of Printex XE2-B as an intermediate layer between ionophore-doped solvent polymeric membrane and electrical conductor. analytical parameters new evaluated by determining sodium, potassium, chlorate nitrate ions. presented Nernstian slopes, good reproducibility standard values small drift. proposed was successfully...

Abstract Metformin (MET) is an antidiabetic drug most commonly used in treatment of diabetes mellitus type 2 (T2D). Adsorptive stripping voltammetric method using carbon black – hydrated ruthenium dioxide Nafion modified glassy electrode (CB‐RuO ‐Nafion GC electrode) have been developed for metformin determination pharmaceutical formulations. By dioxide, electrode's lifespan was extended to at least 3 weeks (change metrological parameters estimated as 3–4 %) what excellent result concerning...