Novel sensitive electrochemical sensor for simultaneous determination of epinephrine and uric acid by using a nanocomposite of MWCNTs–chitosan and gold nanoparticles attached to thioglycolic acid

Simultaneous Electrochemical Determination of Articaine HCl and Epinephrine

“…This allows the local anesthetic to persist at the injection site before being absorbed into the systemic circulation [4]. Literature survey reveals that several different analytical techniques have been developed for the determination of articaine HCl and epinephrine including high performance liquid chromatographic methods [5][6][7], thin layer chromatographic methods [8], gas chromatographic methods [9] and spectrophotometric methods [10] for articaine HCl and high performance liquid chromatographic methods [11][12][13][14][15], thin layer chromatographic methods [16,17], gas chromatographic methods [18,19], spectrophotometric methods [20][21][22][23][24] and electrochemical methods [25][26][27][28][29][30] for epinephrine. Carbon based electrodes are currently in widespread use in electroanalytical chemistry, because of their broad potential window, low cost, rich surface chemistry, low background current and chemical inertness.…”

Synergetic signal amplification of multi-walled carbon nanotubes-Fe3O4 hybrid and trimethyloctadecylammonium bromide as a highly sensitive detection platform for tetrabromobisphenol A

“…MWCNTs can enhance the sensitivity of the electrochemical detection because of their attractive electronic, chemical and mechanical properties3536373839. Moreover, carboxyl-functionalized multi-walled carbon nanotubes (MWCNTs-COOH) have better dispersion and stability compared with MWCNTs40.…”

Photoelectroanalytical Detection of Adrenaline Based on DNA and TiO2 Nanoparticles Sensitized with Bis(ethylenedithio)tetrathiafulvalene Exploiting LED Light

“…5 A number of analytical methodologies have been proposed for determination of adrenaline such as fluorimetric, 6 spectrophotometric, 7 enzymatic radioimmunoassay, 8 gas chromatography, 9 high performance liquid chromatography, 10 capillary electrophoresis 11 and electrochemical methods. [12][13][14][15] Despite the high number of analytical methods for adrenaline determination, most of them suffer from some disadvantages such as high cost, long analysis time, extensive sample pretreatment based on derivatization, extraction and purification as well as demands for highly trained users. The fluorometric and radioenzymatic assays are presently the most widely used techniques for the estimation of plasma, urine and tissue adrenaline.…”

“…However, the most of electrochemical sensors for adrenaline show low linear response range or lack with the limit of detection and sensitivity necessary to adrenaline detection in biological samples. [13][14][15] Nowadays, the photoelectroanalytical devices have emerged as a potentially useful and sensitive system with advantage of high linear response range. [16][17][18] The photoelectrochemical transduction is based on photocurrent detection following light excitation of a photoactive Santos et al 1753 Vol.…”

“…[12][13][14][15] Despite the high number of analytical methods for adrenaline determination, most of them suffer from some disadvantages such as high cost, long analysis time, extensive sample pretreatment based on derivatization, extraction and purification as well as demands for highly trained users. The fluorometric and radioenzymatic assays are presently the most widely used techniques for the estimation of plasma, urine and tissue adrenaline.…”