Results 271 to 280 of about 4,019,710 (295)

Determination of Roxarsone Using Carbon Paste and Amberlite LA2 Modified Carbon Paste Electrodes

Electroanalysis, 2000
The methods for determination of the growth promoter 4-hydroxy-3-nitrobenzenearsonic acid (Roxarsone) in veterinary product and in poultry drinks have been developed using differential pulse voltammetry with carbon paste and Amberlite LA2 chemically modified carbon paste electrodes.
Rahmalan Ahamad, Jiri Barek, A. Rahim Yusoff, Siti Morin Sinaga, Jiri Zima   +4 more
openaire   +1 more source

Electroanalysis of aromatic aldehydes with modified carbon paste electrodes

Analytical Chemistry, 1989
L'utilisation d'une electrode a pâte de carbone modifiee par immobilisation d'aniline, d'acide amino-4 benzoique ou de [Fe(CN) 5 L] 3− (avec L=amino-4 pyridine) pour la determination des aldehydes en solution est ...
Katherine E. Liu, Hector D. Abruna
openaire   +1 more source

Trace analysis at clay‐modified carbon paste electrodes

Electroanalysis, 1989
AbstractCarbon paste electrodes modified with montmorillonite clay are used for the collection of iron(III) from dilute solutions followed by voltammetric quantification of the surface‐bound cation. Open‐circuit conditions are maintained during the ion exchange preconcentration.
Joseph Wang, Teddy Martinez
openaire   +1 more source

Hexacyanoferrate‐anion exchanger‐modified carbon paste electrodes

Electroanalysis, 1997
AbstractThe preparation of carbon paste electrodes (CPEs) modified with the hexacyanoferrate ion attached to synthetic hydrotalcite, a solid anion exchange resin Wofatit SBW and a liquid anion exchanger tris‐octylamine (TOA) used as pasting liquid, is described. Stability of the electrodes and their electrocatalytic properties were investigated.
Ján Labuda, Monika Hudáková
openaire   +1 more source

Modified carbon paste electrodes for discrimination of vegetable oils

Sensors and Actuators B: Chemical, 2005
Abstract A new methodology for the analysis of alimentary vegetable oils has been developed. Vegetables oils have been used as electroactive binder material of carbon paste electrodes. The electrochemical response of such electrodes immersed in a variety of electrolytic aqueous solutions has been exploited to discriminate the oils.
C. Apetrei, M.L. Rodríguez-Méndez, J.A. de Saja   +2 more
openaire   +1 more source

Voltammetry of hexacyanoferrates using a chemically modified carbon-paste electrode

The Analyst, 1986
A simple electroanalytical method for the quantitative determination of hexacyanoferrate(II) and -(III) has been developed using a carbon-paste electrode, chemically modified with a weakly basic anion exchanger. The complexes can be pre-concentrated at the electrode surface prior to voltammetric determination.
openaire   +2 more sources

Chemiluminescent Determination of Glucose with a Modified Carbon Paste Electrode

Microchemical Journal, 1999
A flow injection analysis detection method for glucose is presented which is based on the oxidation of glucose by glucose oxidase followed by chemiluminescent detection of hydrogen peroxide. Both glucose oxidase and hematin, a chemiluminescent reaction catalyst, were bulk-immobilized conveniently by direct mixing with carbon paste, which allows renewal
Guobao Xu, Jingzhong Zhang, Shaojun Dong
openaire   +1 more source

Voltammetric determination of nitrate with a modified carbon paste electrode

Electroanalysis, 1994
AbstractA method for the voltammetric determination of nitrate in drinking water is presented. Nitrate exerts a catalytic effect on the reduction and reoxidation of thallium (1 ↔ 0) in cyclic and differential pulse voltammetry, leading to a peak enhancement.
Christian Neuhold, Kurt Kalcher, Wolfgang Diewald, Xiaohua Cai, Georg Raber   +4 more
openaire   +1 more source

Glassy carbon paste electrodes modified with polyphenol oxidase

Analytica Chimica Acta, 2002
Abstract The electrochemical behavior of a glassy carbon paste electrode (GCPE) is evaluated in comparison to that of graphite paste electrode (gPE) and glassy carbon electrode (GCE). Important shifting in the peak potentials and increases in the peak currents for catechol, ascorbic acid, dopamine and hydroquinone were obtained for the GCPE and its ...
Marcela C. Rodrı́guez, Gustavo A. Rivas   +1 more
openaire   +1 more source

Chemically modified carbon paste electrodes

Journal of Electroanalytical Chemistry, 1981
K. Ravichandran, R.P. Baldwin
openaire   +2 more sources