Electrochemical Sensor Based on Spent Coffee Grounds Hydrochar and Metal Nanoparticles for Simultaneous Detection of Emerging Contaminants in Natural Water

This research describes the modification of a glassy carbon electrode with spent coffee grounds hydrochar (HDC) and copper nanoparticles (CuNPs) for the simultaneous determination of hydroxychloroquine sulfate (HCS) and bisphenol A (BPA). Scanning electron microscopy, EDS and cyclic voltammetry were...

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Bibliographic Details
Published in:Chemosensors 2023-11, Vol.11 (11), p.562
Main Authors: Barreto, Francisco Contini, Ito, Erika Yukie, Mounienguet, Naelle Kita, Dal’ Evedove Soares, Letícia, Yang, Jie, He, Quan (Sophia), Cesarino, Ivana
Format: Article
Language:English
Subjects:
Analysis
Bisphenol A
Carbon
Chemical sensors
chloroquine
Chromatography
Coffee
Contaminants
Copper
Copper compounds
copper nanoparticles
electrochemical sensor
Electrodes
Electrons
emerging contaminants
Ethanol
Glassy carbon
hydrochar
Hydroxychloroquine
Identification and classification
Methods
Nanocomposites
Nanoparticles
Plastic pollution
Properties
Scanning electron microscopy
Scanning microscopy
Sensors
Sodium
Sulfates
Temperature
Voltammetry
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Summary:This research describes the modification of a glassy carbon electrode with spent coffee grounds hydrochar (HDC) and copper nanoparticles (CuNPs) for the simultaneous determination of hydroxychloroquine sulfate (HCS) and bisphenol A (BPA). Scanning electron microscopy, EDS and cyclic voltammetry were used to characterize the nanocomposite. The analytical parameters were optimized and the sensing platform was applied for the determination of HCS and BPA using square-wave voltammetry (SWV). For HCS, the linear range was from 1.0 μmol L−1 to 50 μmol L−1, with an LOD and LOQ of 0.46 and 1.53 μmol L−1, respectively. For BPA, the linear range was from 0.5 μmol L−1 to 10 μmol L−1, with an LOD and LOQ of 0.31 μmol L−1 and 1.06 μmol L−1, respectively. Finally, the developed electrochemical sensor was applied for the quantification of the emerging contaminants in natural water, with recoveries between 94.8% and 106.8% for HCS and 99.6% and 105.2% for BPA. Therefore, HDC-CuNPs demonstrated themselves to be a good alternative as a sustainable and cheaper material for application in electroanalyses.
ISSN:2227-9040
2227-9040
DOI:10.3390/chemosensors11110562