[PDF] Top 20 Simultaneous Determination of Epinephrine, Dopamine, Ascorbic Acid and Uric Acid by Polydopamine-nanogold Composites Modified Electrode

Simultaneous Determination of Epinephrine, Dopamine, Ascorbic Acid and Uric Acid by Polydopamine-nanogold Composites Modified Electrode

... PDA-nanogold modified electrode ...the modified electrode display the lower oxidation over-potentials and exhibits sharp oxidation peaks at 50 mV, 190 mV, 230 mV and 380 mV with greatly ... See full document

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Fabrication of Poly(Aspartic Acid) Nanogold Modified Electrode and Its Application for Simultaneous Determination of Dopamine, Ascorbic Acid, and Uric Acid

... Similarly, ascorbic acid (AA) functions as a redox cofactor and catalyst in a broad array of biochemi- cal reactions and ...[5]. Uric acid (UA) is produced by xanthine oxidase from xanthine ... See full document

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Simultaneous Determination of Ascorbic Acid, Dopamine, and Uric Acid by Differential Pulse Voltammetry using Tiron Modified Glassy Carbon Electrode

... the simultaneous determination of ascorbic acid (AA), dopamine (DA), and uric acid (UA) using Tiron polymer film modified on glassy carbon ...The modified ... See full document

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Simultaneous Determination of Dopamine, Ascorbic Acid and Uric Acid at Poly(Patton and Reeder’s) Modified Carbon Paste Electrode

... polymer-coated electrode to determine DA in the presence of AA and UA displayed excellent selectivity and ...film modified glassy carbon electrode exhibited potent and persistent electron–mediating ... See full document

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Reduced Graphene Oxide/Polydopamine/Gold Electrode as Elecrochemical Sensor for Simultaneous Determination of Ascorbic Acid, Dopamine, and Uric Acid

... In this paper, the reduced graphene oxide/polydopamine (RGO/PDA) nanocomposites are obtained via the reduction of GO nanosheets by dopamine, followed by simultaneous modify by PDA. Then Au ... See full document

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Investigation of Carbon Allotropes for Simultaneous Determination of Ascorbic Acid, Epinephrine, Uric Acid, Nitrite and Xanthine

... In the present study, four famous allotropes of carbons G, GP, MWCNTs and BB were used as modifiers and chitosan (CH) as binder for modification of glassy carbon electrodes (GCE). The electrochemical behaviors of ... See full document

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Simultaneous Determination of Dopamine, Uric Acid and Ascorbic Acid with CTAB Modified Carbon Paste Electrode

... Fig .7 showed the cyclic voltagrams for solution containing mixture of both 1X10 -3 M AA and 1X10 -4 M DA and 0.5X10 -3 M UA in phosphate buffer solution of pH 7.4. The bare CPE (dashed line) showed only one broad and ... See full document

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Simultaneous Determination of Ascorbic Acid, Dopamine and Uric Acid Based on Graphene/Polyaniline/Glod Nanohybrids

... A novel method for preparing graphene/polyaniline (GN/PANI) nanocomposites was demonstrated by liquid-liquid interface polymerization method. Then gold nanoparticles (Au NPs) were uniformly and controllably decorated on ... See full document

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Simultaneous Voltammetric Measurement of Ascorbic Acid, Epinephrine, Uric Acid and Tyrosine at a Glassy Carbon Electrode Modified with Nanozeolite-Multiwall Carbon Nanotube

... or simultaneous determination of AA and co-existing species such as Ep, UA and Tyr is an important issue not only in diagnostic and pathological research but also in the field of biomedical ...their ... See full document

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Simultaneous Electrochemical Determination of Ascorbic Acid, Dopamine and Uric Acid Based on Nitrogen Doped Carbon Sphere Modified Glassy Carbon Electrode

... as ascorbic acid (AA), dopamine (DA) and uric acid (UA) due to its unique structure and properties originating from nitrogen ...advanced electrode material for the ... See full document

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Surfactant Induced Iron (II) Phthalocyanine Modified Carbon Paste Electrode for Simultaneous Detection of Ascorbic Acid, Dopamine And Uric Acid

... phthalocyanine modified carbon paste electrode (CTAB/Fe (II) ONTPc/CPE) was fabricated and was applied to simultaneous determination of ascorbic acid, dopamine and ... See full document

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Electrochemical Determination of Dopamine in Serum in Presence of Uric Acid and Ascorbic Acid at a Sonogel-Carbon L-cysteine Modified Electrode

... selective determination in a ternary mixtures is of great importance in electrochemical ...unmodified electrode and (b) 5% L-cysteine Sonogel-Carbon modified electrode in serum ...unmodified ... See full document

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Selective Determination of Dopamine, Ascorbic Acid and Uric Acid at SDS-MWCNTs Modified Glassy Carbon Electrode

... SDS modified electrode under comparable conditions, achieved effective separation of the oxidation peaks of dopamine, ascorbic acid and uric ...for simultaneous ... See full document

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Determination of Dopamine in Presence of Uric Acid at Poly (Eriochrome Black t) Film Modified Graphite Pencil Electrode

... the simultaneous determination of dopamine in presence of ascorbic acid at electropolymer modified carbon paste electrode ...red) modified electrode for ... See full document

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Simultaneous electrochemical determination of ascorbic acid, dopamine and uric acid using hollow gold nanospheres modified electrode

... It can be seen from Fig. 5B that the peak current of AA decreases with increasing pH from 4.0; and that of UA increases with increasing pH value until it reaches 5.0, and then it decreases when the pH increases further. ... See full document

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Sensitive Electrochemical Determination Uric Acid at Pt Nanoparticles Decorated Graphene Composites in the Presence of Dopamine and Ascorbic Acid

... a modified glassy carbon electrode (GCE) (Ф = 3 mm) as working electrode, a saturated calomel reference electrode (SCE) as reference electrode, and a platinum wire as auxiliary ... See full document

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Simultaneous Voltammetric Determination of Ascorbic Acid, Dopamine and Uric Acid by the Poly(alizarin yellow R)/GCE

... carbon electrode (GCE) modified with the poly(alizarin yellow R) (PAYR) film was prepared by an electropolymerization ...method. Ascorbic acid (AA), dopamine (DA) and uric ... See full document

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Selective Determination of Dopamine and Uric Acid at Poly(acid red 176) Modified Glassy Carbon Electrode in the Presence of Ascorbic Acid

... AA, 10 μM DA, and 20 μM UA at bare GCE and PARGCE in pH 6.47 PBS are shown in Fig.3(B). Similarly, the indistinguishable peak potentials of AA, DA, and UA did not appear when DA was oxidized on the modified GCE. ... See full document

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One-step Fabrication of a New Carbon Paste Electrode for Dopamine, Ascorbic acid and Uric acid determination in Serum

... paste electrode is electrocatalytically active for dopamine, ascorbic acid and uric acid ...entire electrode modification process and supplies useful information as to the ... See full document

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One-pot Synthesis of MPA Capped CdTe Quantum Dots for Non-Enzymatic Hydrogen Peroxide Biosensor Application

... MPA capped CdTe QDs were prepared by reflux method. XRD confirms the zinc blende cubic structure of CdTe QDs and the average crystallite sizes is 0.8 nm for MPA capped CdTe QDs. HRSEM image show the spherical particles ... See full document

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