نتایج جستجو برای: ionselective electrode

تعداد نتایج: 64456  

Journal: :international journal of nanoscience and nanotechnology 2015
p. hadiyan a. rouhollahi m. adibi s. mortazavi

glassy carbon (gc) is the most commonly used carbon-based electrode in the analytical laboratory. because of the high background current and low electrode response, modification of this electrode can be done by various materials and techniques. an ionic liquid (il), 1-methyl-3-(3-trimethoxysilyl propyl) imidazoliumbis (trifluoromethylsulfonyl) imide, was covalently cross linked onto the gc surf...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2000
hassan khodakarami hedayat o. ghourchian

a pvc-based membrane containing cerium phosphate was developed. unlike the cerium phosphate itself that acts as a cation exchanger, the membrane exhibited anion-exchange properties. therefore, the utility of this compound as a sensory element for detection of molybdate ions was pursued. the response of molybdate selective electrode based on this membrane was perfectly linear in the concentratio...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده شیمی 1390

abstract venlafaxine, 1–[2–(dimethylamino)–1–(4–methoxyphenyl) ethyl]cyclohexanol hydrochloride is a novel non-tricyclic antidepressant. venlafaxine is a second generation antidepressant drug, has a neuropharmacologic profile distinct from that of existing antidepressants including tricyclic compounds, selective serotonin reuptake inhibitors and monoamine oxidase inhibitors. venlafaxine impart...

Journal: :iranian journal of oil and gas science and technology 0
sajedeh shahsavari assistant professor, department of chemistry, payame noor university, tehran, iran alireza ganjovi professor ,photonics research institute, institute of science and high technology and environmental sciences, graduate university of advanced technology, kerman, iran alireza ahmadi associate professor,department of mechanical engineering, graduate university of advanced technology, kerman, iran fahimeh shojaei 2 associate professor ,photonics research institute, institute of science and high technology and environmental sciences, graduate university of advanced technology, kerman, iran 3 associate professor,department of mechanical engineering, graduate university of advanced technology

in this paper, using a one-dimensional simulation model, the reforming process of sour gas, i.e. ch4, co2, and h2s, to the various charged particles and syngas in a dielectric barrier discharge (dbd) reactor is studied. an electric field is applied across the reactor radius, and thus a non-thermal plasma discharge is formed within the reactor. based on the space-time coupled finite element meth...

Journal: :iranian chemical communication 2015
reza samimi shalamzari simin mansouri akram eghbali

the conditional formal potential, e°′of methyldopa has been studied by cyclic voltammetry at the surface of activated glassy carbon electrode (agce) as the working electrode in different ph phosphate buffered solutions. the experimental standard redox potential, e°′, of methyldopa is obtained to be 0.72 mv versus she (standard hydrogen electrode). e°′ values have also been calculated with the a...

Journal: :caspian journal of chemistry 2012
hadi beitollahit hassan karimi-maleh iran sheikhshoaie

this paper describes the development, electrochemical characterization and utilization of novel modified molybdenum (vi) complex-carbon nanotube paste electrode for the electrocatalytic determination of ascorbic acid (aa). the electrochemical profile of the proposed modified electrode was analyzed by cyclic voltammetry (cv) that showed a shift of the oxidation peak potential of aa about 235 mv ...

Journal: :journal of reports in pharmaceutical sciences 0
elham arkan nano drug delivery research center, kermanshah university of medical sciences, kermanshah, iran ziba karimi department of chemistry, payame noor university, 19395-3697 tehran, i.r. of iran mojtaba shamsipur faculty of chemistry, razi university, kermanshah, iran reza saber department of medical nanotechnology, school of advanced medical technologies, tehran university of medical sciences (tums), tehran, iran

abstract the graphene–chitosan composite film modified glassy carbon electrode was fabricated and used to determine amlodipine besylate. in 0.1 m ph 7.3 phosphate buffer solutions, the redox peak currents of amlodipine besylate increased significantly at graphene–chitosan composite film modified glassy carbon electrode compared with bare electrode and chitosan modified glassy carbon electrode, ...

Journal: :journal of nanostructures 2012
m. mazloum-ardakani h. kholghi m. a. sheikh-mohseni a. benvidi h. naeimi

in this paper, a nanostructured modified electrode was fabricated by incorporating of 2,2′-[1,9-nonanediylbis(nitriloethylidyne)]-bis-hydroquinone (nnh) as a newly synthesized modifier and tio2 nanoparticles to the carbon paste (mtcpe) and then was used for the electroanalysis of epinephrine (ep). the electrochemical studies were carried out by using cyclic voltammetry, chronoamperometry and di...

Journal: :journal of nanostructures 2013
m. mazloum-ardakani a. r. khoshroo

in this work, sol-gel method was used tosynthesize titanium dioxide nanoparticles (tio2). the tio2nanoparticles was characterized by scanning electron microscopy (sem), x-ray diffraction (xrd) and bet technique.the tio2 and coumarin derivative (7-(1,3-dithiolan-2-yl)-9, 10-dihydroxy-6h-benzofuro [3,2-c] chromen-6-on) were incorporated in a graphite composite electrode. the resulting modified el...

This paper proposes a Micro-electro-mechanical (MEMS) capacitive pressure sensor that relies on the movable electrode displaced like a flat plate equal to the maximum center deflection of diaphragm. The diaphragm, movable electrode and mechanical coupling are made of polysilicon, gold and Si3N4, respectively. The fixed electrode is gold and the substrate is Pyrex glass. This proposed method inc...

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