Glassy Carbon Electrode Modified with C/Au Nanostructured Materials for Simultaneous Determination of Hydroquinone and Catechol in Water Matrices
| Autor: | Natalia Hassan, Samuel Piña, Paola Jara-Ulloa, Ricardo Salazar, Christian Candia-Onfray, David Contreras |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
02 engineering and technology QD415-436 010402 general chemistry 01 natural sciences Biochemistry Analytical Chemistry Industrial wastewater treatment chemistry.chemical_compound Tap water simultaneous determination Physical and Theoretical Chemistry nanomaterials Detection limit Catechol Aqueous solution Hydroquinone chemometric tool catechol 021001 nanoscience & nanotechnology 0104 chemical sciences hydroquinone chemistry Standard addition modified electrode Differential pulse voltammetry 0210 nano-technology Nuclear chemistry |
| Zdroj: | Chemosensors, Vol 9, Iss 88, p 88 (2021) Chemosensors Volume 9 Issue 5 |
| ISSN: | 2227-9040 |
| Popis: | The simultaneous determination of hydroquinone and catechol was conducted in aqueous and real samples by means of differential pulse voltammetry (DPV) using a glassy carbon electrode modified with Gold Nanoparticles (AuNP) and functionalized multiwalled carbon nanotubes by drop coating. A good response was obtained in the simultaneous determination of both isomers through standard addition to samples prepared with analytical grade water and multivariate calibration by partial least squares (PLS) in winery wastewater fortified with HQ and CT from 4.0 to 150.00 µM. A sensitivity of 0.154 µA µM−1 and 0.107 µA µM−1, and detection limits of 4.3 and 3.9 µM were found for hydroquinone and catechol, respectively. We verified the reliability of the developed method by simultaneously screening analytes in spiked tap water and industrial wastewater, achieving recoveries over 80%. In addition, this paper demonstrates the applicability of chemometric tools for the simultaneous quantification of both isomers in real matrices, obtaining prediction errors of lower than 10% in fortified wastewater. |
| Databáze: | OpenAIRE |
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