By a News Reporter-Staff News Editor at Science Letter -- Researchers detail new data in Science. According to news reporting out of Bangkok, Thailand, by NewsRx editors, research stated, "A novel and highly sensitive electrochemical system based on electrospun graphene/polyaniline/polystyrene (G/PANI/PS) nanofiber-modified screen-printed carbon electrodes has been developed for dopamine (DA) determination. A dramatic increase (9 times) in the current signal for the redox reaction of a standard, ferri/ferrocyanide [Fe(CN)(6)](3-/4) couple was found when compared to an unmodified electrode."
Our news journalists obtained a quote from the research from Chulalongkorn University, "This modified electrode also exhibited favorable electron transfer kinetics and excellent electrocatalytic activity toward the oxidation of DA. When used together with square wave voltammetry (SWV), DA can be selectively determined in the presence of the common interferents (i.e. ascorbic acid and uric acid). Under optimal conditions, a very low limit of detection (0.05 nM) and limit of quantification (0.30 nM) were achieved for DA. In addition, a wide dynamic range of 0.1 nM to 100 p,M was found for this electrode system."
According to the news editors, the research concluded: "Finally, the system can be successfully applied to determine DA in complex biological environment (e.g. human serum, urine) with excellent reproducibility."
For more information on this research see: Graphene-loaded nanofiber-modified electrodes for the ultrasensitive determination of dopamine. Analytica Chimica Acta, 2013;804():84-91. Analytica Chimica Acta can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Analytica Chimica Acta - www.elsevier.com/wps/product/cws_home/502681)
Our news journalists report that additional information may be obtained by contacting N. Rodthongkum, Chulalongkorn University, Fac Sci, Dept. of Chem, Electrochem & Opt Spect Res Unit, Bangkok 10330, Thailand. Additional authors for this research include N. Ruecha, R. Rangkupan, R.W. Vachet and O. Chailapakul (see also Science).
Keywords for this news article include: Asia, Bangkok, Science, Thailand
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