Publication: A novel electrochemical sensor for the simultaneous determination of fat-soluble vitamins using a screen-printed graphene/nafion electrode
1
0
Issued Date
2018
Resource Type
File Type
application/pdf
ISSN
10139826
Other identifier(s)
2-s2.0-85054810914
Rights Holder(s)
Scopus
Bibliographic Citation
Key Engineering Materials. Vol 777 KEM, (2018), p.597-601
Suggested Citation
Thangphatthanarungruang J., Ngamaroonchote A., Laocharoensuk R., Chotsuwan C., Siangproh W. A novel electrochemical sensor for the simultaneous determination of fat-soluble vitamins using a screen-printed graphene/nafion electrode. Key Engineering Materials. Vol 777 KEM, (2018), p.597-601. doi:10.4028/www.scientific.net/KEM.777.597 Retrieved from: https://hdl.handle.net/20.500.14740/3781
Abstract
In 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.
Subject(s)
Dietary supplements
Electrochemical electrodes
Ethanol
Graphene
Inorganic compounds
Scanning electron microscopy
Sodium compounds
Vitamins
Voltammetry
Electrochemical behaviors
Experimental parameters
Fat soluble vitamins
Morphological characterization
Nafion
Screen printed electrodes
Simultaneous determinations
Square wave voltammetry
Electrochemical sensors
Electrochemical electrodes
Ethanol
Graphene
Inorganic compounds
Scanning electron microscopy
Sodium compounds
Vitamins
Voltammetry
Electrochemical behaviors
Experimental parameters
Fat soluble vitamins
Morphological characterization
Nafion
Screen printed electrodes
Simultaneous determinations
Square wave voltammetry
Electrochemical sensors