نتایج جستجو برای: voltammetric sensor

تعداد نتایج: 191472  

2014
Ali F. Alghamdi

Adsorptive stripping voltammetry was used to prospect the adsorption property of montelukast sodium (MKST) on the hanging mercury drop electrode (HMDE). Through appointing the adsorptive stripping voltammetric (AdSV) process, a sensitive electroanalytical method for the quantitative analysis of MKST was accomplished. A well-developed voltammetric peak was obtained in pH 10 Britton-Robinson buff...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2003
sayed mahdi golabi mirzazadeh jalil

a thin film of epinephrine (ep) was electrochemically deposited on the surface of glassy carbon electrode previously activated in nahco3 solution. the cyclic voltammograms of the modified electrode indicate that the surface confined ep are strongly dependent on the solution ph, as expected for quinone/hydroquinone functionalities. the ep-modified glassy carbon electrode exhibited catalytic acti...

2015
Li Wang Qunfeng Niu Yanbo Hui Huali Jin

In this study, an application of a voltammetric electronic tongue for discrimination and prediction of different varieties of rice was investigated. Different pretreatment methods were selected, which were subsequently used for the discrimination of different varieties of rice and prediction of unknown rice samples. To this aim, a voltammetric array of sensors based on metallic electrodes was u...

Journal: :Phyton-international Journal of Experimental Botany 2022

In this communication, we used electrochemical sensor for recording the profiles of eleven species Yulania spp. from leaf extract. Two solvents and two buffer conditions were fingerprints collection. Their can be converted to different patterns consequently recognition. The results indicate pattern recognition is much convenient than that directly using voltammetric signal. current information ...

Journal: :ECS sensors plus 2022

In this study, a PoL/RGO material was successfully synthesized and employed to modify the working electrode for determining MPB in medication products through voltammetric techniques. The structure of nanocomposite characterized by UV–vis FT-IR spectrum its application electrochemical detection tested CV DPV result, modified PoL-RGO/GCE exhibited superior response toward applying method, compar...

Journal: :Chemosensors 2021

This work reports a rapid, simple and low-cost voltammetric sensor based on dummy molecularly imprinted polymer (MIP) that uses 2,4-dinitrophenol (DNP) as template for the quantification of 2,4,6-trinitrotoluene (TNT) DNP, identification related substances. Once was synthesised by thermal precipitation polymerisation, it integrated onto graphite epoxy composite (GEC) electrode via sol–gel immob...

Journal: :Chemosensors 2021

This manuscript reports the use of nanoparticle-modified voltammetric sensors for rapid and green determination chemical oxygen demand in river waters from agricultural waste. Four different variants modified electrodes have been prepared: CuO nanoparticles electrogenerated over Cu covered with Nafion film (CuO/Cu-Nf), graphite–epoxy composites Cu, CuO, Cu–Ni alloy nanoparticles. The response f...

2015
Enda Howard John F. Cassidy John O'Gorman

This communication characterises the differential pulse voltammetric response of ultramicroelectrodes in connection with two different models.

Journal: :Anais da Academia Brasileira de Ciencias 2002
Francisco C Pereira Nelson R Stradiotto Maria Valnice B Zanoni

Miconazole is reduced at mercury electrode above pH 6 involving organometallic compound formation, responsible for an anomalous polarographic behavior. The electrodic process presents a large contribution of the adsorption effects. The drug can be determined by cathodic stripping voltammetry from 8.0 x 10(-8) to 1, 5 x 10(-6) molL-1 in Britton-Robinson buffer pH 8.0, when pre-accumulated for 30...

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