نتایج جستجو برای: voltammetric sensor

تعداد نتایج: 191472  

In the present paper, poly(Tyrosine) modified graphene paste electrode (PTMGPE) was fabricated by utilizing an electropolymerization technique. Deposition of polymer film at bare graphene paste electrode (BGPE) was characterized by field emission scanning electron microscopy (FE-SEM). The PTMGPE was applied for Voltammetric detection of catechol (CC) and its quantification in phosphate buffer s...

2005
Jian Wu Jun Liu Min Fu Guang Li Zhengguo Lou

A Chinese yellow wine classification method is proposed based on chemometric analysis of voltammogram of copper electrode. The main components in Chinese yellow wine are alcohol, amino acids and carbon hydrates. In strong alkaline solution copper electrode shows rich voltammetric responses to these components. Principal component analysis is employed to analyse voltammetric response of copper e...

Journal: :Journal of Applied Electrochemistry 2022

Abstract The toxicity of propachlor (PROP) with its chloroacetanilide members is reported. Rapid and sensitive detection PROP critical for ecotoxicity evaluation the removal process. A novel voltammetric sensor developed based on imprinted poly (o-phenylene diamine-co-pyrrole) (o-PD-co-Py) electrochemically reduced graphene oxide (ERGO) to detect at a trace level. use ERGO provides high density...

Journal: :The Journal of Automatic Chemistry 1989
H. H. J. L. Ploegmakers P. A. Moritz P. J. M. M. Toll W. J. van Oort

A computerized electrochemical detection system for application after HPLC, provided with a cyclic voltammetric oxidative and reductive module, is described for the on-line qualitative determination of electroactive antineoplastic agents and metabolites in urine samples, collected from cancer patients, following intravenous administration.The application of two cyclic voltammetric detection mod...

Journal: :Analytical chemistry 2012
Jonathan T Cox Joshua P Guerrette Bo Zhang

Here we report the theory and experimental study of the steady-state voltammetric behavior of a microelectrode used as a limiting pole in a closed bipolar electrochemical cell. We show that the steady-state voltammetric response of a microelectrode used in a closed bipolar cell can be quantitatively understood by considering the responses of both poles in their respective conventional two-elect...

2001
Xiaoping Gao Shaowei Chen

There are numerous examples in the literature of amphiphilic molecules which, when adsorbed onto mercury electrodes, undergo electric-field-induced transitions between different molecular conformations. In general, very sharp and reversible voltammetric features associated with these transitions are observed when the electrode potential is scanned in the negative direction, typically over the r...

2015
Haitao Han Dawei Pan Dongyan Liu Xueping Hu Mingyue Lin Fei Li

Citation: Han H, Pan D, Liu D, Hu X, Lin M and Li F (2015) Cathodic stripping voltammetric determination of chromium in coastal waters on cubic Nano-titanium carbide loaded gold nanoparticles modified electrode. Front. Mar. Sci. 2:75. doi: 10.3389/fmars.2015.00075 Cathodic stripping voltammetric determination of chromium in coastal waters on cubic Nano-titanium carbide loaded gold nanoparticles...

2015
Behrooz Zargar Hooshang Parham

A simple square-wave adsorptive voltammetric (SWAV) method was developed for determining Captopril (CAP) in pharmaceutical formulations. The proposed method was based on the electrochemical reduction of CAP at a mercury thin film electrode (MTFE). The preparation of the TMFE/Glassy carbon electrode was very simple; also, this electrode had very good reproducibility and regeneration of its surfa...

2002
KENNETH W. BRULAND KENNETH H. COALE

Bruland, K.W., Coale, K.H. and Mart, L., 1985. Analysis of seawater for dissolved cadmium, copper and lead: an intercomparison of voltammetric and atomic absorption methods. Mar. Chem., 17: 285--300. An intercomparison study of voltammetric and atomic absorption spectrometric methods for determining cadmium, lead and copper in seawater samples was conducted. The voltammetric approach utilizes d...

Journal: :Journal of Electrochemical Science and Engineering 2021

Various carbon-based sensors (graphene, carbon nanotubes, graphite, pencil glassy carbon, etc.) have distinctive behavior and a broad range of importance for identifying sex hormones like estriol, estradiol, estrone, progesterone, testosterone. The current review emphasizes voltammetric, amperometric, electrochemical impedance spectroscopic methods detecting some these hormones. existence, stru...

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