نتایج جستجو برای: potentiometric sensors

تعداد نتایج: 96487  

2006
Alejandro Durán Montserrat Cortina Lya Velasco José Antonio Rodríguez Salvador Alegret Manuel del Valle

In this work we report the design, construction, and applications of an electronic tongue (abbreviated e-tongue) based on an array of potentiometric sensors employing the Sequential Injection Analysis technique (SIA) operated as a Virtual Instrument implemented in LabVIEW6.1. The system can use transient and stationary responses as the measured input information for e-tongues. The new concepts ...

2012
Farnoush Faridbod

Clomipramine hydrochloride, active component of an antidepressant drug, was determined in the pharmaceutical formulation by two kinds of potentiometric sensor; a PVC membrane sensor and a carbon paste electrode modified by MWCNTs and ionic liquid. Both sensors were corporated with clomipramine-tetraphenylborate ion-pair complex and they respond based on ion exchange mechanism. The best PVC memb...

2007
Gamal Abdel-Hafiz Mostafa Mohamed Mahmoud Hefnawy Abdulrahman Al-Majed

The construction and general performance characteristics of two novelpotentiometric membrane sensors responsive to the acebutolol are described. Thesensors are based on the use of ion-association complexes of acebutolol (AC) withtetraphenylborate(TPB) (I) and phosphomolybdate(PM) (II) as exchange sites in a PVCmatrix. The sensors show a fast, stable and near- Nernstian for the mono charge catio...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2003
Saad S M Hassan Wagiha H Mahmoud Mohamed A F Elmosallamy Mahra H Almarzooqi

Two novel potentiometric membrane sensors responsive to the ibuprofen drug have been developed. These incorporate poly(vinyl chloride) and polyurethane matrix membranes containing 5,10,15,20-tetraphenylporphrinato (TPP) indium(II) ionophore plasticized with dibutylsebacate. The sensors show a near-Nernstian response with anionic slopes of -53 and -55 mV decade(-1), over the concentration range ...

2011
Wei-Song Wang Hong-Yi Huang Shu-Chun Chen Kuo-Chuan Ho Chia-Yu Lin Tse-Chuan Chou Chih-Hsien Hu Wen-Fong Wang Cheng-Feng Wu Ching-Hsing Luo

A real-time telemetry system, which consists of readout circuits, an analog-to-digital converter (ADC), a microcontroller unit (MCU), a graphical user interface (GUI), and a radio frequency (RF) transceiver, is proposed for amperometric and potentiometric electrochemical sensors. By integrating the proposed system with the electrochemical sensors, analyte detection can be conveniently performed...

2007
Giorgio M. Verrelli C. Di Natale

International conferences• L. Lvova, G. Verrelli, R. Paolesse, C. Di Natale, A. D′Amico; An appli-cation of porphyrin-based Electronic Tongue system for ’Verdicchio’ wineanalysis; Eurosensors XVIII; Rome, 12-15 September 2004• L.Lvova, G. Verrelli, R. Paolesse, C. Di Natale, A. D′Amico, S. Makarychev-Mikhailov; Pt(II)TPP and Pt(IV)TPPCl2 as ionophores for polymericmembra...

In food sector, there is a huge demand for rapid, reliable, user & eco-friendly biosensors to analyse the quality and safety of food products. Biosensor based methodology depends upon the recognition of a specific antigens or receptors by corresponding antibodies, aptamers or high-affinity ligands. The first scientifically commercialised sensors were the electrochemical sensors used for the ana...

Journal: :Chemistry proceedings 2021

Since the development process of new sensors is long and tedious, it would be very helpful to develop a model that could predict sensor properties based on active compound structure without actual synthesis characterization corresponding sensors. In this work, for prediction logK (HCO3−/Cl−) was constructed 40 ligand structures suggested in literature carbonate sensing. Substructural molecular ...

Journal: :ChemElectroChem 2022

Abstract The decentralisation of accurate determination the ammonium ion (NH 4 + ) is relevant for environmental monitoring (i. e., nitrogen cycle) and certain clinical applications (e. g., kidney liver diseases). Potentiometric ionophore‐based sensors are one alternative these purposes in terms versatile implementation, though potassium (K known to be a major source interference. We herein inv...

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