New Detector Based on Composite of Carbon Nanotubes with Nanoparticles of Cobalt Oxide for Carbohydrates Analysis by HPLC with Reverse Pulsed Amperometric Detection
AUTOR(ES)
Sá, Acelino C. de; Paim, Leonardo L.; Stradiotto, Nelson R.
FONTE
J. Braz. Chem. Soc.
DATA DE PUBLICAÇÃO
2020-03
RESUMO
This work aims to present an alternative detector for the determination of arabinose, galactose, glucose and xylose in hydrolyzed sugarcane bagasse. The detector was developed using an electrode modified with multi-walled carbon nanotubes containing cobalt oxide nanoparticles (GCE/MWCNT/CoOOH) applied in high-performance liquid chromatography (HPLC) with reverse pulsed amperometric detection (RPAD). The limits of detection obtained were 3.4 × 10-6, 4.4 × 10-6, 3.6 × 10-6 and 5.0 × 10-6 mol L-1 for arabinose, galactose, glucose and xylose, respectively. The standard addition method was used to determine the concentration of sugars in the hydrolyzed sugarcane. The determined concentrations for arabinose, galactose, glucose, and xylose were 1.0 × 10-3, 7.2 × 10-5, 3.0 × 10-3 and 2.4 × 10-3 mol L-1, respectively. The results demonstrate that this new method can be used for the detection of sugars without the interference of other electroactive species.
Documentos Relacionados
- Amperometric Detection of Isoprenaline Based on Glassy Carbon Electrode Modified by Iridium Oxide Nanoparticles
- Fast determination of naproxen in pharmaceutical formulations by batch injection analysis with pulsed amperometric detection
- Evaluation of a Graphite-Polyurethane Composite Electrode Modified with Copper Nanoparticles as an Amperometric Flow Detector in a Wall-Jet System for the Determination of Cysteine
- Characterization of carbon nanotubes-gold nanoparticles composite film modified electrode and voltammetric determination of mefenamic acid
- Nanoelectronic Devices Based on Carbon Nanotubes