Publication:
Ultra-high performance liquid chromatographic determination of antioxidants in teas using inkjet-printed graphene-polyaniline electrode

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Issued Date

2016

Resource Type

Article

File Type

application/pdf

ISSN

399140

DOI

10.1016/j.talanta.2015.05.020

Other identifier(s)

2-s2.0-84949089799

Rights Holder(s)

Scopus

Bibliographic Citation

Talanta. Vol 148, (2016), p.673-679

Suggested Citation

Bardpho C., Rattanarat P., Siangproh W., Chailapakul O. Ultra-high performance liquid chromatographic determination of antioxidants in teas using inkjet-printed graphene-polyaniline electrode. Talanta. Vol 148, (2016), p.673-679. doi:10.1016/j.talanta.2015.05.020 Retrieved from: https://hdl.handle.net/20.500.14740/5724

Title

Ultra-high performance liquid chromatographic determination of antioxidants in teas using inkjet-printed graphene-polyaniline electrode

Author(s)

Bardpho C.
 Rattanarat P.
 Siangproh W.
 Chailapakul O.

Abstract

A development of ultra-high performance liquid chromatographic coupled with a novel inkjet-printed conductive ink-modified electrode for a fast and simultaneous determination of polyphenolic antioxidants was achieved. Two printing techniques were selected for fabrication and modification including (i) an in-house screen-printing method and (ii) an inkjet-printing method, respectively. A conductive ink containing graphene and polyaniline nanocomposite (G-PANI) was precisely casted onto the surface of screen-printed carbon electrode (SPCE) using a dimatix inkjet material printer. Compared to a bare SPCE, the G-PANI-modified screen-printed carbon electrode (G-PANI/SPCE) exhibited higher electrochemical sensitivity with increase (2-4 times) of peak current of each antioxidant. Moreover, four antioxidants were successfully separated and determined within 3 min using a reverse phase ultra-high performance liquid chromatography (UHPLC) with a mobile phase containing phosphate buffer and acetonitrile (90:10 v/v). Under an optimal detection potential at +1.2 V vs. Ag/AgCl, linear calibrations and limits of detection (S/N=3) for antioxidants were found to be 0.01-10 μg mL-1 and 1.38-1.94 ng mL-1, respectively. Finally, this proposed method has been successfully used for the determination of antioxidants in tea samples, the results obtained from our presented method were within a highly good agreement those obtained from a standard UHPLC-UV method. © 2015 Elsevier B.V.

Subject(s)

Antioxidants
 Chemical detection
 Flavonoids
 Graphene
 High performance liquid chromatography
 Ink
 Ink jet printing
 Liquids
 Polyaniline
 Screen printing
 Chromatographic determination
 ELectrochemical detection
 Polyaniline nanocomposites
 Polyphenolic
 Screen-printed carbon electrodes
 Simultaneous determinations
 UHPLC
 Ultra high performance liquid chromatography (UHPLC)
 Electrochemical electrodes
 Aniline derivative
 Antioxidant
 Graphite
 Polyaniline
 Tea
 Chemistry
 Devices
 Electrochemical analysis
 High performance liquid chromatography
 Printing
 Procedures
 Tea
 Aniline Compounds
 Antioxidants
 Chromatography, High Pressure Liquid
 Electrochemical Techniques
 Graphite
 Printing
 Tea

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URI

https://hdl.handle.net/20.500.14740/5724

Collections

Scopus: Year 1983-2021

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