2022
Reduced graphene oxide/ZnO nanocomposite modified electrode for the detection of tetracycline
DUROVIC, Ana, Zorica STOJANOVIC, Zuzana BYTESNIKOVA, Snezana KRAVIC, Pavel SVEC et. al.Základní údaje
Originální název
Reduced graphene oxide/ZnO nanocomposite modified electrode for the detection of tetracycline
Autoři
DUROVIC, Ana, Zorica STOJANOVIC, Zuzana BYTESNIKOVA, Snezana KRAVIC, Pavel SVEC, Jan PŘIBYL (203 Česká republika, garant, domácí) a Lukas RICHTERA
Vydání
Journal of materials science, NEW YORK, Springer, 2022, 0022-2461
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10400 1.4 Chemical sciences
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.500
Kód RIV
RIV/00216224:14740/22:00127889
Organizační jednotka
Středoevropský technologický institut
UT WoS
000758999900002
Klíčová slova anglicky
SOLID-PHASE EXTRACTIONWALL CARBON NANOTUBESODIUM-BOROHYDRIDEGRAPHITESAMPLESSPECTROSCOPYANTIBIOTICSREDUCTIONCOMPOSITEWATER
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 17. 10. 2024 12:59, Ing. Monika Szurmanová, Ph.D.
Anotace
V originále
In this work, rGO-ZnO (reduced graphene oxide-zinc oxide) nanocomposite was prepared and used for modification of GC (glassy carbon) surface in order to obtain an electrochemical sensor for tetracycline determination in water and urine samples by voltammetric technique. The characterization of synthesized nanocomposite was accomplished by utilizing SEM, EDS, AFM and FTIR analyses. The electrochemical behaviour of tetracycline on the modified GCE was studied by cyclic voltammetry and results revealed that modification enhanced the electro-oxidation of tetracycline with increased current intensity. Tetracycline provided a well-defined oxidation peak at around + 1.05 V vs. Ag/AgCl (3.5 mol/L KCl) in Britton-Robinson buffer (BRB) at pH 8.0. Then, square-wave voltammetry (SWV) was applied for analytical purposes. The influence of the supporting electrolyte (type, concentration and pH) and SWV parameters on the peak current was investigated in order to optimize the experimental and instrumental conditions for quantitative analysis. Under the optimal conditions, the prepared sensor exhibits a wide linear range (4-400 mu mol/L) with a low limit of detection (0.38 mu mol/L) and good reproducibility of analysis (RSD < 3.40%). In addition, the sensor showed high selectivity towards tetracycline analysis in comparison to interferences often present in real samples. The practical analytical usefulness of the presented sensing platform was successfully demonstrated in the determination of tetracycline in water and human urine with good recoveries.
Návaznosti
LQ1601, projekt VaV |
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90127, velká výzkumná infrastruktura |
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