Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/12850
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dc.contributor.authorThangphatthanarungruang J.
dc.contributor.authorNgamaroonchote A.
dc.contributor.authorLaocharoensuk R.
dc.contributor.authorChotsuwan C.
dc.contributor.authorSiangproh W.
dc.date.accessioned2021-04-05T03:21:41Z-
dc.date.available2021-04-05T03:21:41Z-
dc.date.issued2018
dc.identifier.issn10139826
dc.identifier.other2-s2.0-85054810914
dc.identifier.urihttps://ir.swu.ac.th/jspui/handle/123456789/12850-
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85054810914&doi=10.4028%2fwww.scientific.net%2fKEM.777.597&partnerID=40&md5=56a611c76b3542da5162eddd193b5e00
dc.description.abstractIn this work, a novel electrochemical sensor was proposed for the simultaneous determination of fat-soluble vitamins (A, D, E, K) using a screen-printed graphene/Nafion electrode (SPGNE). The scanning electron microscopy was used for morphological characterization of the electrode surface. The electrochemical behaviors of fat-soluble vitamins have been studied in a mixture of ethanol and sodium perchlorate monohydrate using square-wave voltammetry (SWV). The results obtained indicated that the oxidation peak of each fat-soluble vitamin appeared at different potentials leading to the possibility for the simultaneous detection. The influences of experimental parameters such as the effects of proportions of ethanol, potential increment, amplitude, frequency and quiet time were examined. Under the optimized conditions, the linearity between oxidative currents and concentrations of fat-soluble vitamins ranged from 0.1 μg mL-1 to 5μg mL-1 for Vitamin A, 0.08μg mL-1 to 5μg mL-1 for Vitamin D and E, and 0.2μg mL-1 to 1.6μg mL-1 for total vitamin K, with the limits of detection of 0.018, 0.013, 0.012 and 0.004 μg mL-1 respectively. These developed sensors provide high sensitivity in detection and offer high potential to apply them for the simultaneous determination of fat-soluble vitamins in dietary supplements. © 2018 Trans Tech Publications, Switzerland.
dc.subjectDietary supplements
dc.subjectElectrochemical electrodes
dc.subjectEthanol
dc.subjectGraphene
dc.subjectInorganic compounds
dc.subjectScanning electron microscopy
dc.subjectSodium compounds
dc.subjectVitamins
dc.subjectVoltammetry
dc.subjectElectrochemical behaviors
dc.subjectExperimental parameters
dc.subjectFat soluble vitamins
dc.subjectMorphological characterization
dc.subjectNafion
dc.subjectScreen printed electrodes
dc.subjectSimultaneous determinations
dc.subjectSquare wave voltammetry
dc.subjectElectrochemical sensors
dc.titleA novel electrochemical sensor for the simultaneous determination of fat-soluble vitamins using a screen-printed graphene/nafion electrode
dc.typeConference Paper
dc.rights.holderScopus
dc.identifier.bibliograpycitationKey Engineering Materials. Vol 777 KEM, (2018), p.597-601
dc.identifier.doi10.4028/www.scientific.net/KEM.777.597
Appears in Collections:Scopus 1983-2021

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