Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/13930
ชื่อเรื่อง: Ultra-performance liquid chromatography coupled with graphene/polyaniline nanocomposite modified electrode for the determination of sulfonamide residues
ผู้แต่ง: Thammasoontaree N.
Rattanarat P.
Ruecha N.
Siangproh W.
Rodthongkum N.
Chailapakul O.
Keywords: Amides
Chemical detection
Graphene
Liquid chromatography
Nanocomposites
Phase separation
Polyaniline
Potassium compounds
Shellfish
Sulfur compounds
Boron-doped diamond electrodes
ELectrochemical detection
Electrospraying
Hydrodynamic voltammetry
Screen-printed carbon electrodes
Sulfonamides
Ultra performance liquid chromatography
UPLC
Electrodes
acetonitrile
acetonitrile derivative
alcohol
aniline derivative
graphite
nanocomposite
phosphate
polyaniline
potassium derivative
potassium dihydrogen phosphate
sulfonamide
animal
chemical structure
chemistry
devices
electrochemical analysis
electrode
high performance liquid chromatography
isolation and purification
Penaeidae
procedures
reproducibility
scanning electron microscopy
solid phase extraction
transmission electron microscopy
ultrastructure
Acetonitriles
Aniline Compounds
Animals
Chromatography, High Pressure Liquid
Electrochemical Techniques
Electrodes
Ethanol
Graphite
Microscopy, Electron, Scanning
Microscopy, Electron, Transmission
Molecular Structure
Nanocomposites
Penaeidae
Phosphates
Potassium Compounds
Reproducibility of Results
Solid Phase Extraction
Sulfonamides
วันที่เผยแพร่: 2014
บทคัดย่อ: An ultra-performance liquid chromatography (UPLC) coupled with graphene/polyaniline (G/PANI)-modified screen-printed carbon electrode was developed for separation and sensitive determination of eight sulfonamides (SAs) in shrimp. Electrospraying was selected for electrode modification because it can generate the well dispersion of G/PANI nanocomposites on the electrode surface. Prior to electrochemical detection, eight SAs were completely separated within 7 min by using reversed phase UPLC (C4) with mobile phase containing 70:25:5 (v/v/v) of potassium hydrogen phosphate (pH 3):acetonitrile:ethanol. For amperometric detection, the detection potential acquired from hydrodynamic voltammetry was found to be +1.4 V. Under optimal conditions, a wide linearity and low limit of detection were obtained for eight SAs in the range of 0.01-10 μg mL-1 and 1.162-6.127 ng mL-1, respectively. Compared to boron-doped diamond (BDD) electrode, a G/PANI-modified screen-printed carbon electrode offered higher sensitivity with lower operating cost. To determine SAs in shrimp samples, solid-phase extraction was used to clean up and preconcentrate the samples prior to UPLC separation. To validate this developed method, a highly quantitative agreement was accomplished with UPLC-UV system. Thus, this proposed system might be an alternative approach for rapid, inexpensive, and sensitive determination of SAs in shrimps. © 2014 Elsevier B.V. All rights reserved.
URI: https://ir.swu.ac.th/jspui/handle/123456789/13930
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84894542854&doi=10.1016%2fj.talanta.2014.02.004&partnerID=40&md5=a0e821fe823d9adbf13db8151f80365c
ISSN: 399140
Appears in Collections:Scopus 1983-2021

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