نتایج جستجو برای: Voltammetric behavior

تعداد نتایج: 621863  

2014
P. Karuppasamy R. Arumugam M. Ragu M. Ganesan T. Rajendran V. K. Sivasubramanian

Accepted on 25 th August 2014 _____________________________________________________________________________ ABSTRACT Synthesis of symmetrical Schiff bases (1-4) employed by using condensation methods. Purity was monitored by TLC and column chromatographic techniques. In this present study cyclic voltammetric behavior of symmetrical Schiff bases (1-4) were studied. The cyclic voltammetric studie...

Journal: :analytical and bioanalytical chemistry research 0
karim asadpour-zeynali department of analytical chemistry, faculty of chemistry, university of tabriz, tabriz, iran venus baghalabadi department of analytical chemistry, faculty of chemistry, university of tabriz, tabriz, iran

in this work poly eriochrome black t (ebt) was electrochemically synthesized on the glassy carbon electrode as electrode modifier. on the modified electrode, voltammetric behavior of isoniazid (inh) was investigated. the poly (ebt)-modified glassy carbon electrode has excellent electrocatalytic ability for the electrooxidation of isoniazid. this fact was appeared as a reduced overpotential of i...

2004
Ana Maria Oliveira Brett Frank-Michael Matysik M. Teresa Vieira

Thin-film gold electrodes were produced by radio-frequency sputtering using a polyvinyl chloride foil as substrate. The voltammetric behavior was characterized in various electrolyte solutions. In alkaline and neutral aqueous solutions reliable voltammetric measurements can be performed while in acidic media some nondefined phenomena occur. A novel type of electrode for batch injection analysis...

2005
Koichi Aoki Qiang Ke

Suspensions of polyaniline-coated latex particles 13 μm in diameter showed the integer-fold voltammetric currents at the microelectrode of which size was similar to the diameter of the particles. The currents did not vary with concentrations of polyaniline particles but varied accidentally with each voltammetric run. They were caused by the reduction of a few polyaniline particles adsorbed on t...

Journal: :Portugaliae Electrochimica Acta 2011

2005
Timothy P. Henning

The electrochemical behavior of the cation exchange polymer Nation containing tetrathiafulvalenium (TTF +) on a platinum sub strate is described. The polymer electrode shows cyclic voltammetric behavior similar to that of solid films of TTF on platinum. In 1.0M KBr the oxidized form of the electroactive molecules in the polymer (TTF § forms nonstoichiometric complexes with Br-. The peak potenti...

2007
Vahid Nasiri Hassan Karimi-Maleh Mohammad A. Khalilzadeh Daryoush Zareyee

In this work, we study electrochemical behavior of p-chloranil as a suitable mediator for voltammetric determination of dopamine (DA) using voltammetric method. Using the modified electrode, the kinetics of DA electrooxidation was considerably enhanced by lowering the anodic over potential through a catalytic fashion. The differential voltammetric peak currents of the electrode increased linear...

Journal: :Acta chimica Slovenica 2011
Lenka Bandžuchová Renáta Selešovská

The electrochemical behavior of folic acid (FA) on a polished silver solid amalgam electrode (p-AgSAE), as a liquid mercury free electrode, has been studied in this paper. Differential pulse voltammetry (DPV) was found as a suitable method for voltammetric determination of folic acid. A limit of detection as 5.88 × 10-10 M (after 60 s of accumulation) was calculated for FA determination in an a...

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...

Journal: :Dalton transactions 2015
Laith R Almazahreh Wolfgang Imhof Jean Talarmin Philippe Schollhammer Helmar Görls Mohammad El-khateeb Wolfgang Weigand

In this paper we study the influence of substituting one CO ligand in [Fe2(CO)6{μ-(SCH2)2(Ph)P=O}] (1) by better σ-donor L ligands affording [Fe2(CO)5(L){μ-(SCH2)2(Ph)P=O}] {L = PPh3 (2) and P(OEt)3 (3)} in relation to the steric interactions and the voltammetric behavior. Cyclic voltammetric investigations under N2 and CO showed remarkable differences in the electrochemical behaviour of comple...

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