Development of an electrochemical sensor for the determination of glycerol based on glassy carbon electrodes modified with a copper oxide nanoparticles/multiwalled carbon nanotubes/pectin composite
| Autor: | Sebastián Noel Robledo, Nelio Roberto Vettorazzi, Aylen Di Tocco, José Sandoval-Cortés, Yolanda Osuna-Sánchez, José L. Martinez, Adrian Marcelo Granero, María Alicia Zon, Anna Iliná, Héctor Fernández, Elda P. Segura, Fernando Javier Arévalo |
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| Rok vydání: | 2017 |
| Předmět: |
animal structures
Materials science Composite number COPPER OXIDE NANOPARTICLES 02 engineering and technology Glassy carbon 010402 general chemistry Electrochemistry 01 natural sciences BIODIESEL MULTIWALLED CARBON NANOTUBES Materials Chemistry Organic chemistry Electrical and Electronic Engineering Instrumentation Detection limit integumentary system Otras Ciencias Químicas Ciencias Químicas Metals and Alloys GLYCEROL 021001 nanoscience & nanotechnology Condensed Matter Physics Amperometry 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Electrochemical gas sensor Linear range embryonic structures Electrode 0210 nano-technology ELECTROCHEMICAL SENSOR CIENCIAS NATURALES Y EXACTAS Nuclear chemistry |
| Zdroj: | Sensors and Actuators B: Chemical. 244:949-957 |
| ISSN: | 0925-4005 |
| DOI: | 10.1016/j.snb.2017.01.093 |
| Popis: | A very sensitive electrochemical sensor to determine glycerol (GLY) in biodiesel samples has been developed. It is based on the electrochemical oxidation of GLY at glassy carbon electrodes modified with copper oxide nanoparticles supported on multiwalled carbon nanotubes/pectin composite. The electrochemical oxidation of GLY was studied in pH 8 phosphate buffer solutions. The quantification of GLY was performed by amperometric measurements. The proposed electrochemical sensor improves the performance of others methods developed for the quantitation of GLY. A low limit of detection of 5.8 × 10−6 g dm−3and a percent coefficient of variation smaller than 10% was found, along with a reasonable linear range of 9 × 10−6–1 × 10−3 g dm−3. The proposed electrochemical sensor exhibited good performance, stability, reproducibility, repetitiveness and a good detection limit and a linear concentration range to quantify GLY in biodiesel samples. Fil: Arevalo, Fernando Javier. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química y Física; Argentina Fil: Osuna-Sánchez, Yolanda. Universidad Autónoma de Coahuila; México Fil: Sandoval-Cortés, José. Universidad Autónoma de Coahuila; México Fil: Di Tocco, Aylen. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química y Física; Argentina Fil: Granero, Adrian Marcelo. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química y Física; Argentina Fil: Robledo, Sebastian Noel. Universidad Nacional de Río Cuarto. Facultad de Ingeniería; Argentina Fil: Zon, María Alicia. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química y Física; Argentina Fil: Vettorazzi, Nelio Roberto. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química y Física; Argentina Fil: Martínez, José Luis. Universidad Autónoma de Coahuila; México Fil: Segura, Elda Patricia. Universidad Autónoma de Coahuila; México Fil: Iliná, Anna. Universidad Autónoma de Coahuila; México Fil: Fernandez, Hector. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química y Física; Argentina |
| Databáze: | OpenAIRE |
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