Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
A new method of quantitative incorporation of primary cations into ion-selective membrane by means of galvanostatic cathodic polarization/conditioning, before measurement step, was proposed and tested on the example of potassium-selective electrode with ionophore - valinomycin in poly(vinyl chloride) based membrane and with polypyrrole solid contact. Open circuit potential values recorded after polarization can be quantitatively explained by changes of primary cations and ionophore concentration in the surface part of the membrane. The influence of potassium ions concentration in the membrane (in relation to ion exchange sites amount) on the shape of potentiometric calibration plots was also observed. Improved characteristics, with extended linear range, can be obtained for membrane of minor loading with primary cations (around 25%), the responses are relatively stable in course of following calibrations.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.talanta.2011.02.018 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A 3D printed platform for sample treatment and detection of phytic acid in spinach leaves using a paper-based electrochemical biosensor.
Biosens Bioelectron
August 2025
Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via Della Ricerca Scientifica, 00133, Rome, Italy; SENSE4MED, via Bitonto 139, 00133, Rome, Italy. Electronic address:
Phytic acid is a phosphorylated derivative of myo-inositol that is ubiquitous in plants and serves as the primary storage form of phosphorus. In human nutrition, phytic acid is considered an anti-nutrient because it chelates essential minerals, including calcium, iron, and zinc. This binding action reduces the bioavailability of these metals, highlighting the importance of monitoring phytic acid in food.
View Article and Find Full Text PDFNeuroinflammatory Consequences of Rhinovirus Infection in Human Epithelial and Neuronal Models.
Lung
September 2025
The Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, Belfast BT9 7BL, UK.
Introduction: Rhinovirus (RV) is the leading cause of exacerbations of lung disease. A sensory neuronal model, derived from human dental pulp stem cells and differentiated into peripheral neuronal equivalents (PNEs), was used to examine RV's effects on airway sensory nerves. We investigated whether RV can directly infect and alter PNEs or whether it exerts effects indirectly via the release of mediators from infected epithelial cells.
View Article and Find Full Text PDFCationic Calcium Channels Activated by Cyclic Nucleotides in Plants: A Systematic Review Using the PRISMA Method.
Prog Biophys Mol Biol
September 2025
Grupo de investigación en Química Teórica y Bioinformática, Department of Chemistry, Universidad de Caldas, Cl. 65 # 26-10, Manizales, Colombia.
The primary objective of this review is to analyze primary research published over the past six years concerning cyclic nucleotide-gated calcium channels (CNGC) in plants. The aim is to structure this information to identify and organize existing knowledge regarding their tertiary and quaternary structures, as well as the activation mechanisms of CNGC. Studies on plant CNGC published between January 2018 and May 2025 were included, while research focused on animals, bacteria, or ions other than calcium was excluded.
View Article and Find Full Text PDFDiffusion of macromolecules in extracellular matrix mimetic hydrogels - effect of size and charge.
Eur J Pharm Sci
September 2025
Department of Medicinal Chemistry, Uppsala University, SE-75123 Uppsala, Sweden. Electronic address:
Subcutaneous (SC) injection is the primary alternative to oral administration for therapeutic proteins and peptides. However, bioavailability and absorption rate are often variable and difficult to predict. Therefore, there is a need for new biorelevant and predictive SC in vitro methods.
View Article and Find Full Text PDFChitin nanocrystal/carboxymethyl cellulose bilayer emulsion with rigid inner layer and flexible outer shell for ultra-stable encapsulation of fish oil.
Carbohydr Polym
November 2025
Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Key Laboratory of Industry Microbiology, Hubei University of Technology, Wuhan 430068, China. Electronic address:
The polyunsaturated fatty acids in fish oil are prone to oxidation and have poor dispersibility, which limits their use in the food sector. In this work, oil-in-water emulsions stabilized by chitin nanocrystals (ChNC) were prepared via high-speed homogenization. Anionic carboxymethyl cellulose (CMC) was assembled onto cationic ChNC-stabilized emulsion droplet surfaces via layer-by-layer self-assembly technology to construct ChNC/CMC (Ch-C) bilayer emulsions with rigid inner layer and flexible outer shell structures.
View Article and Find Full Text PDF