[PDF] Top 20 Simultaneous Determination of Dopamine, Uric Acid and Ascorbic Acid with CTAB Modified Carbon Paste Electrode

... the electrode/solution interface with different electrical properties, but also adsorb at electrode surface or aggregate into super molecular structures to change electrochemical process ...of CTAB ... See full document

... 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

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

... 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

... on its surface. The poly(PR) film at the electrode consciously enhanced the redox peak current of DA and could separately determine DA. The separation of oxidation peak potential is of DA-AA and UA- DA was 163mV ... See full document

... Folic acid (N-[p-[[(2-amino-4-hydroxy-t-tpiridinyl) methyl] amino]-benzoyl]-L-glutamic acid) (FA) is widely distributed vitamin (vitamin M, vitamin BC and vitamin B9) and it is an important component of the ... See full document

... doped carbon sphere (NDCS), with an average diameter ranging from 220 to 280, was prepared with glucose and melamine mixture as starting materials and ethylene glycol as the solvent and reducing agent by ... See full document

... for electrode modification has previously been investigated for DA ...and simultaneous determination of AA and DA at micro molar levels in pharmaceutical ...quantitative determination of DA in ... See full document

... 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 ... See full document

... at carbon-based electrodes in acidic solutions suffered from interference from AA which can be oxidized at a potential close to that of ...chemically modified electrodes [18-24] were developed to solve the ... See full document

... 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

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

... in dopamine hydrochloride injection [21, ...applying modified electrode for the determination of DA in real sample [6, 19] such as human urine [9, ...the determination of DA by using ... See full document

... biosensor modified with several metal nanomaterial’s and QDs have been ...The modified TGA capped CdTe QDs based on electrode shows high selective detection of dopamine in the presence of ... See full document

... sulfuric acid to give graphite oxide, which was then dispersed in water by sonication to give a colloidal ...graphene-modified electrode was prepared as follows, 5 mg of the nano-graphene powder was ... See full document

... concluded that the best electrocatalytic effect for NE oxidation is observed at CAMCNPE (curve f). For example, the results are shown that the peak potential of NE oxidation at CAMCNPE (curve f) shifted by about 250 and ... See full document

... the determination of DA has been carried out ...of ascorbic acid (AA) and uric acid (UA). Uric acid is an end product from purine derivatives in human ...of uric ... See full document

... Ascorbic acid (AA) or vitamin C is distributed widely in both the plant and animal ...contrast, uric acid (UA) is the primary product of purine metabolism in ...for determination of ... See full document

... salicylic acid modified CPE produces increased peak current and a more quasireversible electron process of DA with the oxidation and reduction peak potentials at 225 mV and 129 mV ...salicylic acid ... See full document

... chemically modified electrodes to detect DA selectively has occurred in past ...polymer-modified electrode [16-25], carbon ionic liquid electrodes [26-28], nano materials modified ... See full document