Determination of Creatinine in Urine by Voltammetry and Glassy Carbon Electrode Modified with Functionalized Multi-walled Carbon Nanotubes and Copper

Pedrozo-Penafiel M.J.; Lopes T.; Gutierrez-Beleno L.M.; Miranda-Andrades J.R.; Maia Da Costa M.E.H.; Larrude D.G.; Aucelio R.Q.

Determination of Creatinine in Urine by Voltammetry and Glassy Carbon Electrode Modified with Functionalized Multi-walled Carbon Nanotubes and Copper

Tipo

Artigo

Data de publicação

2023

Periódico

Electroanalysis

Citações (Scopus)

0

Autores

Pedrozo-Penafiel M.J.
Lopes T.
Gutierrez-Beleno L.M.
Miranda-Andrades J.R.
Maia Da Costa M.E.H.
Larrude D.G.
Aucelio R.Q.

Resumo

© 2022 Wiley-VCH GmbH.A square-wave voltammetric method was developed for the determination of creatinine using glassy carbon electrode functionalized multi-walled carbon nanotubes and doped with copper. Since the creatine-creatinine balance is dependent on pH, the linear responses at either pH 4.0 or 7.0 were evaluated allowing versatility in application, covering analyte concentration from limit of quantification (0.3 μmol L−1) up to 1.200 μmol L−1 (pH 4) or 660 μmol L−1 (pH 7). Electrode is simple to prepare and robust for routine analysis and it was used for the determination of creatinine in urine after simple thin-layer separation procedure to avoid interference from creatine.

Assuntos Scopus

F-MWCNT , Functionalized multi-walled carbon nanotubes , Glassy carbon electrodes , Linear response , MWCNT's , Simple++ , Square wave voltammetry , Square-wave , Urine analysis , Voltammetric methods