[PDF] Top 20 Simultaneous Voltammetric Determination of Ascorbic Acid, Dopamine and Uric Acid by the Poly(alizarin yellow R)/GCE

... the GCE and the PAYR/GCE without AA, DA and UA, ...the GCE and the PAYR/GCE with AA, DA and UA, ...the GCE, the PAYR/GCE can considerably enhance the anodic peak currents of AA, ... See full document

... In summary, Au NPs decorated RGO/PDA nanocomposites were obtained by a simple and green method. Then the electrochemical sensor was fabricated for determination of AA, DA, and UA based on RGO/PDA/Au/GCE. ... See full document

... in simultaneous determination is the resolu- tion between DA and AA as well as DA and ...for simultaneous determination of DA, AA and UA, such as silver doped poly(L-valine) modified ... See full document

... bare GCE, GN/PANI/GCE and GN/PANI/Au/GCE were first investigated by CV ...bare GCE (curve a), only one anodic peak is obtained near 600 mV, and the peak potentials of DA, UA and AA are ... See full document

... bare GCE and PARGCE in pH ...the simultaneous detection of these three compounds in a homogeneous ...quantitative determination of DA in the presence of excess amount of ... See full document

... bare GCE, the peak currents of DA, UA and AA increased significantly at the modified ...broad voltammetric signal for DA, AA and UA was observed at approximately ...bare GCE failed to resolve the ... See full document

... the determination of ...[16], voltammetric [17], polarography [18], gas chromatography [19], phosphorimetry [20] ...at GCE in pH 2 has also been reported [22]. Use of mediator like alizarin ... See full document

... AA. Poly(cresol-red) modified electrodes [15] poly(oracet blue) modified electrode [16], poly(eriochrom black T) modified electrode [17], poly(naphthalene sulfunic acid) modified ... See full document

... sulfuric acid to give graphite oxide, which was then dispersed in water by sonication to give a colloidal ...of GCE and dried under infrared lamp to give a graphene-modified ... See full document

... the simultaneous determination of AA, DA and UA at NDCS modified GCE, differential pulse voltammograms (DPVs) was carried out in their ...bare GCE, CS@GCE and NDCS@GCE in ...bare ... See full document

... The morphology of AuNPs/GNS composites was investigated using a JEOL, JSM 5800-LV scanning electron microscope (SEM) operated at 5 kV. An X-ray powder diffractometer (XRD, Shimadzu, X-6000, Cu Kα radiation) was used to ... See full document

... and GO using chronoamperometry. PtNPs/GR modified electrode was successfully fabricated for the selective and quantitative detection of UA in the presence of DA and a very high concentration of AA. And its ... See full document

... bare GCE and the modified electrode in mixture of EP, DA, AA and ...bare GCE gives a single broad oxidation peak at around 400 mV and a small reduction peak at 180 mV with poor sensitivity, and fails to ... See full document

... and poly (PR) film modified CPE was recorded ...condition poly (PR) modified CPE (solid line) gave birth to significantly enhanced peak current and more reversible electron transfer process to DA with ... See full document

... and poly (VA) ...the voltammetric signal of DA and AA. Only one broad voltammetric signal for DA and AA was observed at approximately 195 ...single voltammetric peak for DA and ...the ... See full document

... the determination of UA or DA, a major obstacle usually encountered is the interference of AA, which is usually present in high concentrations in the body fluids and can be oxidized at a potential close to that of ... See full document

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

... of dopamine can cause autism, schizophrenia and paranoia. Reduced dopamine concentrations in the brain is associated with the development of Parkinson's ...humans, uric acid (UA) is the final ... See full document

... the voltammetric peak is rather broad, suggesting slow electron transfer kinetics, presumably due to the fouling of the electrode surface by the oxidation ... See full document

... II-VI semiconductor nanocrystals also known as quantum dots (QDs) has received extensive attention due to their size dependent optical properties, efficient emission and potential applications in biosensor, nonlinear ... See full document