Publication Type:

Journal Article

Source:

Journal of Electroanalytical Chemistry, Elsevier B.V., Volume 818, p.124-130 (2018)

URL:

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85046029204&doi=10.1016%2fj.jelechem.2018.04.020&partnerID=40&md5=02a34c29f48ba021af5acdf9ae6f4a73

Keywords:

Amines, ascorbic acid, Bilirubin-albumin complex, Dynamic detection range, Electrochemical electrodes, Electrochemical oxidation, Graphite, Graphite electrodes, ibuprofen, Non-enzymatic, Physiological condition, Quantitative determinations, Screen-printed carbon electrodes, Voltammetric determination

Abstract:

Disposable screen printed carbon electrodes have been developed for the quantitative determination of free bilirubin. The electrodes were fabricated using graphite carbon ink and characterized with microscopy, spectroscopy and diffraction studies. The carbon ink for printing is made of graphite nanoparticles of size around 50 nm. Electrochemical oxidation of bilirubin was carried out voltammetrically in Trizma buffer of pH 8.5. The sensor showed a dynamic detection range of 5–600 μM and a sensitivity of 95 μAμM−1 cm−2. The SPCE showed superior performance than many of the reported sensors in terms of dynamic range, sensitivity and oxidation potential. Molecules such as ascorbic acid, uric acid, dopamine, glucose, creatinine and ethanol were tested using SPCE and found to be non interfering with the detection of creatinine in the physiological conditions. The sensor was tested using bilirubin spiked serum samples and found that it is giving response to free bilirubin. The sensor was also used to study the affinity of free bilirubin to albumin and displacement of bilirubin from albumin by ibuprofen.

Notes:

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Cite this Research Publication

J. Raveendran, Stanley, J., and Dr. Satheesh Babu T. G., “Voltammetric Determination of Bilirubin on Disposable Screen Printed Carbon Electrode”, Journal of Electroanalytical Chemistry, vol. 818, pp. 124-130, 2018.