State-of-the-Art Chemical Sensors in Spain

A special issue of Chemosensors (ISSN 2227-9040).

Deadline for manuscript submissions: 31 March 2025 | Viewed by 1360

Special Issue Editors


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Guest Editor
Department of Analytical Chemistry, Faculty of Chemistry, University of Murcia, 30100-Murcia, Spain
Interests: chemical sensors; ion-selective electrodes; electrochemistry at the interface between two immiscible electrolyte solutions (ITIESs)
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Analytical Chemistry, Faculty of Chemistry, University of Murcia, 30100 Murcia, Spain
Interests: ion-selective electrodes; voltametric techniques at solid/liquid and liquid/liquid interfaces; modelling chemical systems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Spain is recognized globally as one of the leading countries in sensors research. To showcase the breadth, depth, and quality of this research, we are planning to publish a Special Issue, entitled “State-of-the-Art Chemical Sensors in Spain”.

The aim of this Special Issue is to provide a comprehensive view of the state-of-the-art chemical sensors in Spain. Research articles and reviews that provide a comprehensive insight into the state of the art in Spain of any aspect related to novel sensor development and applications are welcome. Topics of interest include, but are not limited to, the following:

  • Chemosensors;
  • Chemical sensors;
  • Biosensors;
  • Electrochemical sensors;
  • Molecular imprinting sensors;
  • Gas sensors;
  • Colorimetric sensors;
  • Voltammetry sensors;
  • Sensing and imaging;
  • Lab-on-a-chip technology;
  • Microfluidic devices;
  • Nanobiosensors;
  • Biomedical sensors;
  • Optical chemical sensors.

Prof. Dr. Joaquín Ángel Ortuño
Dr. José M. Olmos
Guest Editors

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Keywords

  • chemosensors
  • chemical sensors
  • biosensors
  • electrochemical sensors
  • molecular imprinting sensors
  • gas sensors
  • colorimetric sensors
  • voltammetry sensors
  • sensing and imaging
  • lab-on-a-chip technology
  • microfluidic devices
  • nanobiosensors
  • biomedical sensors
  • optical chemical sensors

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Published Papers (1 paper)

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Research

12 pages, 3007 KiB  
Article
Real-Time Potentiometric Monitoring of Tetrachloroaurate(III) with an Ion-Selective Electrode and Its Applications to HAuCl4 Iodide-Catalyzed Reduction by Hydroxylamine
by Carmen María Almagro-Gómez, José Ginés Hernández-Cifre and Joaquín Ángel Ortuño
Chemosensors 2024, 12(6), 95; https://doi.org/10.3390/chemosensors12060095 - 1 Jun 2024
Viewed by 710
Abstract
Ion-selective electrodes for tetrachloroaurate(III) have been developed for potentiometric monitoring of the reduction reaction of tetrachloroaurate(III). Three different plasticized polyvinyl chloride membranes containing tridodecymethylammonium chloride as an anion exchanger were investigated. These membranes differ in the plasticizer used, either 2-nitrophenyl octyl ether (NPOE) [...] Read more.
Ion-selective electrodes for tetrachloroaurate(III) have been developed for potentiometric monitoring of the reduction reaction of tetrachloroaurate(III). Three different plasticized polyvinyl chloride membranes containing tridodecymethylammonium chloride as an anion exchanger were investigated. These membranes differ in the plasticizer used, either 2-nitrophenyl octyl ether (NPOE) or tricresyl phosphate (TCP) or bis-(2-ethylhexyl) sebacate (DOS). The potentiometric response of the electrodes to the tetrachloroaurate(III) concentration was studied by two methods. In the first method, commonly used in the calibration of ion-selective electrodes, successive tetrachloroaurate(III) concentration increments were used and the potential was allowed to stabilize after each concentration step. The second method was developed to mimic the tetrachloroaurate(III) reduction reaction in which there is a continuous decrease in the concentration of tetrachloroaurate(III). This was achieved by continuously diluting an initial concentration of tetrachloroaurate(III) by pumping a diluent solution while keeping the sample volume constant. This method gave an excellent linear response to the tetrachloroaurate(III) concentration. The calibrated electrodes were used for the potentiometric monitoring of the kinetics of a newly observed reaction: the reduction of tetrachloroaurate(III) by hydroxylamine catalyzed by iodide. A mechanism for this reaction is proposed on the basis of the experimental results obtained. Full article
(This article belongs to the Special Issue State-of-the-Art Chemical Sensors in Spain)
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