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Marlin J. Pedrozo-Peñafiel Thais Lópes Luis M. Gutiérrez-Beleño Jarol R. Miranda-Andrades Marcelo E. H. Maia Da Costa Dunieskys G. Larrudé Ricardo Q. Aucelio 《Electroanalysis》2023,35(2):e202200081
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. 相似文献
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