TY - JOUR
T1 - Electroanalysis of sulfonamides by flow injection system/high-performance liquid chromatography coupled with amperometric detection using boron-doped diamond electrode
AU - Preechaworapun, Anchana
AU - Chuanuwatanakul, Suchada
AU - Einaga, Yasuaki
AU - Grudpan, Kate
AU - Motomizu, Shoji
AU - Chailapakul, Orawon
N1 - Funding Information:
We would like to acknowledge support from the Thailand Research Fund (TRF) for Research Senior Scholars, The Enhancement on the Country's Performance and Competitiveness Program, and the Ratchadaphisek Somphot Grant, Chulalongkorn University.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2006/2/28
Y1 - 2006/2/28
N2 - Sulfonamides (SAs) were electrochemically investigated using cyclic voltammetry at a boron-doped diamond (BDD) electrode. Comparison experiments were carried out using a glassy carbon electrode. The BDD electrode provided well-resolved oxidation, irreversible cyclic voltammograms and higher current signals when compared to the glassy carbon electrode. Results obtained from using the BDD electrode in a flow injection system coupled with amperometric detection were illustrated. The optimum potential from a hydrodynamic voltammogram was found to be 1100 mV versus Ag/AgCl, which was chosen for the HPLC-amperometric system. Excellent results of linear range and detection limit were obtained. This method was also used for determination of sulfonamides in egg samples. The standard solutions of 5, 10, and 15 ppm were spiked in a real sample, and percentage of recoveries was found to be between 90.0 and 107.7.
AB - Sulfonamides (SAs) were electrochemically investigated using cyclic voltammetry at a boron-doped diamond (BDD) electrode. Comparison experiments were carried out using a glassy carbon electrode. The BDD electrode provided well-resolved oxidation, irreversible cyclic voltammograms and higher current signals when compared to the glassy carbon electrode. Results obtained from using the BDD electrode in a flow injection system coupled with amperometric detection were illustrated. The optimum potential from a hydrodynamic voltammogram was found to be 1100 mV versus Ag/AgCl, which was chosen for the HPLC-amperometric system. Excellent results of linear range and detection limit were obtained. This method was also used for determination of sulfonamides in egg samples. The standard solutions of 5, 10, and 15 ppm were spiked in a real sample, and percentage of recoveries was found to be between 90.0 and 107.7.
KW - Amperometric detection
KW - Boron-doped diamond thin film electrode
KW - Cyclic voltammetry
KW - Flow injection system
KW - HPLC
KW - Sulfonamides
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U2 - 10.1016/j.talanta.2005.08.040
DO - 10.1016/j.talanta.2005.08.040
M3 - Article
C2 - 18970521
AN - SCOPUS:31344438496
SN - 0039-9140
VL - 68
SP - 1726
EP - 1731
JO - Talanta
JF - Talanta
IS - 5
ER -