مشخصات پژوهش

عنوان	Simultaneous voltammetric determination of ascorbic acid and dopamine at the surface of electrodes modified with self-assembled gold nanoparticle films
نوع پژوهش	مقاله چاپ شده
کلیدواژه‌ها	Gold nanoparticles. Self-assembled monolayers.Ascorbic acid. Dopamine.Voltammetric determination
چکیده	Gold nanoparticles (GNs) could be efficiently immobilized on binary mixed self-assembled monolayers (SAMs) on a gold surface composed of 1,6-hexanedithiol and 1-octanethiol (nano-Au/SAMs gold electrode). This GN chemically modified electrode was used for electrochemical determination of ascorbic acid (AA) and dopamine (DA) in aqueous media. The result showed that the GN-modified electrode could clearly resolve the oxidation peaks of AA and DA, with a peak-to-peak separation (∆Ep) of 110 mV enabling determination of AA and DA in the presence of each other. The linear analytical curves were obtained in the ranges of 0.3–1.4 mM for AA and 0.2–1.2 mM for DA concentrations using differential pulse voltammetry. The detection limits (3σ) were 9.0×10-5 M for AA and 9.0×10-5 M for DA.
پژوهشگران	سحر رشید ندیمی (نفر پنجم)، رودابه ولی الهی (نفر چهارم)، رضا اوجانی (نفر سوم)، ابوالفضل کیانی (نفر دوم)، جهانبخش رئوف (نفر اول)