Study of electrochemical phosphate sensing systems: Spectrometric, potentiometric and voltammetric evaluation
MetadataShow full item record
Characterization of the interaction of a urea-functionalized calixarene ionophore and phosphate wasundertaken by combination of nuclear magnetic resonance (NMR) spectrometry, potentiometric selectivity coefficient evaluation and voltammetric ion transfer at the interface between two immiscibleelectrolyte solutions (ITIES). NMR revealed that the urea protons were involved in complexation withthe target anion and potentiometric separate solution selectivity data indicated selectivity for phosphateover chloride and sulphate. Voltammetry at the ITIES confirmed that the ionophore-facilitated transfer ofmonohydrogen phosphate occurred in preference to dihydrogen phosphate transfer. The results correlatewith previously reported data on the potentiometric evaluation of this calixarene as an anionophore inPVC-membrane electrodes. The data provide the basis for development of amperometric monohydrogenphosphate sensors based on the ion-transfer principle.
Showing items related by title, author, creator and subject.
Evaluation of interfacial sulfate complexation by a bis-thiourea ionophore at water-organic interfaces using microelectrochemistry and high resolution mass spectrometryAlvarez de Eulate; Busetti, F.; Arrigan, Damien (2017)Simple, fast and low cost methods for the detection of sulfate are required for different applications. Electrochemistry at water/o-nitrophenyloctylether (W/NPOE) interfaces was employed to evaluate sulfate detection by ...
Hexacyanoferrate-Adapted Biofilm Enables the Development of a Microbial Fuel Cell Biosensor to Detect Trace Levels of Assimilable Organic Carbon (AOC) in Oxygenated SeawaterCheng, Liang; Quek, S.; Cord-Ruwisch, R. (2014)A marine microbial fuel cell (MFC) type biosensor was developed for the detection of assimilable organic carbon (AOC) in ocean water for the purpose of online water quality monitoring for seawater desalination plants prone ...
Bakker, Eric; Bhakthavatsalam, V.; Gemene, K. (2008)For about 100 years, potentiometry with ion-selective electrodes has been one of the dominating electroanalytical techniques. While great advances in terms of selective chemistries and materials have been achieved in ...