Anthraquinone/activated carbon electrochemical sensor and its application in acetaminophen analysis.
Anal Sci
; 40(6): 1129-1141, 2024 Jun.
Article
in En
| MEDLINE
| ID: mdl-38558384
ABSTRACT
Acetaminophen (AC) can inhibit the synthesis of prostaglandins in the body, and has antipyretic and analgesic effects. In this paper, a two-step microwave impregnation method was used to prepare anthraquinone (AQ)-doped carbon composite, which were applied to the surface modification of glassy carbon electrodes (GCE) for the determination of acetaminophen (AC) using differential pulse voltammetry (DPV). The composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman and Fourier infrared spectroscopy (FT-IR). The results showed that anthraquinone was successfully modified on the surface of activated carbon. The peak current of AC increased with its concentration in the range of 0.1 µM to 700 µM (R2 = 0.998) and a detection limit of 0.05 µM was obtained with 20%AQ doped carbon electrochemical sensor (20%AQ-C/GCE). Electrochemical Impedance Spectroscopy (EIS) test results indicated that the charge transfer resistance (Rct) of 20%AQ-C/GCE is only the one-fourth of that of bare GCE. The proposed 20%AQ-C/GCE sensor has good stability, reproducibility and selectivity for the detection of AC. The sensor is also suitable for the detection of real samples, indicating its good practicality.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Anthraquinones
/
Electrodes
/
Electrochemical Techniques
/
Acetaminophen
Language:
En
Journal:
Anal Sci
/
Anal. sci
/
Analytical sciences
Year:
2024
Document type:
Article
Country of publication: