[PDF] Top 20 Detection of Epinephrine in Presence of Serotonin and Ascorbic Acid by TTAB Modified Carbon Paste Electrode: A Voltammetric Study

... conventional electrode (i.e., bare glassy carbon, graphite, Au, Pt) because of its high overpotential, electrode fouling property, poor reproducibility and poor ...of epinephrine sensor has ... See full document

... Acetone modified carbon paste electrode (20%:80%) has been shown to be effective for dopamine ...showed electrode process was diffusion ...in presence of AA and ... See full document

... the voltammetric signal of DA and AA. Only one broad voltammetric signal for DA and AA was observed at approximately 195 ...the electrode surface by the oxidation products results in a single ... See full document

... A carbon paste electrode (CPE) modified with poly (tannic acid) was used for the sensitive voltammetric determination of dopamine (DA) and epinephrine ...the ... See full document

... bare electrode for the voltammetric determination of DA in the presence of ...the voltammetric signal into two well defined voltammetric peaks at 41mV and 245mV corresponding to AA and ... See full document

... indicates that the redox reaction involves a transfer process of two protons. The effect of solution pH on the electrochemical signal is similar to the effect of solution pH on carbon-loated nickel magnetic ... See full document

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

... the detection of neurotransmitter in the extracellular fluid of the central nervous system as a received much interest in the past few decades ...coated carbon fibre microelectrodes as electrochemical ... See full document

... electrochemical detection of DA ...electrochemical detection of DA in real biological matrices is the coexistence of some interfering ...these ascorbic acid (AA) is of particular ...bare ... See full document

... the detection limits of some ...the presence of trace ...the electrode surface, which facilitated the electron or the substance transfer between the electrode and the ...sulphonic acid ... See full document

... as ascorbic acid (AA) and dopamine ...a modified electrode, which can eliminate to the EP determination [7, ...this study, a novel electrochemical sensor was fabricated with silver ... See full document

... present study involves the development of MMCPE/immobilized SDS modified carbon paste electrode by bulk modification (direct mixing) of carbon paste followed by ... See full document

... overlapping voltammetric response ...the electrode surface, which results in rather poor selectivity and sensitivity in addition, oxidation of DA at the electrode surface in the presence of AA ... See full document

... electrochemical detection of DA is serious interferences caused by the ascorbic acid (AA), L-Ascorbic acid (Vitamin C) (AA), a water soluble vitamin, is an extremely important substance ... See full document

... The electrode system contained a working carbon paste electrode, home made cavity of 3mm diameter, a platinum wire as counter electrode and saturated calomel electrode as ... See full document

... lactic acid sensor was fabricated by a carbon paste electrode (CPE) modified with cobalt phthalocyanine ...CoPC modified electrode in lactic acid solutions was ... See full document

... Cyclic voltammetry (CV), chronoamperommetry, and differential pulse voltammetry (DPV) were performed in an analytical system, Autolab with PGSTAT 12 (Eco Chemie B. V., Utrecht, and The Netherlands). The system was run on ... See full document

... The RDE technique was used to determine the diffusion coefficient and rate constant of ascorbic acid under specified condition. Figure 7 shows the oxidation of ascorbic acid at bare GC ... See full document

... This study proposed a new carbon paste electrode (CPE) that was modified using a nanoalloy (Pt:Co) room- temperature ionic liquid (RTIL) as an extremely sensitive sensor for the ... See full document

... [38] modified electrode the ASCA utility is not affected for high hidrogenionic concentration (pH < ...of ascorbic acid versus anodic current are shown in Figure ... See full document