2026-06-30T06:21:35Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/55972022-09-14T22:42:06Zcom_10259_4376com_10259_5086com_10259_2604col_10259_4377
Repositorio Institucional de la Universidad de Burgos
author
Ott, Colby E.
author
Cunha Silva, Hugo
author
Kuberski, Sara L
author
Cox, Joseph A.
author
Arcos Martínez, Julia
author
Arroyo Mora, Luís E.
2021-01-13T12:38:52Z
2021-01-13T12:38:52Z
2020-09
1572-6657
http://hdl.handle.net/10259/5597
10.1016/j.jelechem.2020.114425
Square-wave adsorptive stripping voltammetry (SWAdSV) is proposed as a fast, simple, and sensitive approach toward the detection, identification, and semi-quantitation of fentanyl in seized drug samples using screen-printed carbon electrodes. Electrochemical oxidation of fentanyl resulted in the formation of two anodic peaks, one at 0.75 V (peak I) and the second at 0.88 V (peak II) versus a Ag/AgCl pseudo reference electrode. Voltammetric measurements were conducted under optimized experimental conditions using fentanyl standards ranging from 0.076 μg/mL to 6.9 μg/mL, which resulted in a limit of detection of 0.037 μg/mL. Reproducibility was assessed as the average percent relative standard deviation of the slopes of calibration curves and was 2.6% for oxidation peak I and 7.4% for oxidation peak II in cell. Detection capabilities were assessed in a 5-mL cell and in a 100 microliter drop. Interference studies were conducted with cocaine, methamphetamine, quinine, caffeine, and acetaminophen. The mechanism for the electrochemical oxidation of fentanyl to norfentanyl is also described. Accuracy and suitability of the method for seized drug analysis was assessed using 11 simulated samples. Suitability of the method for future analysis of fentanyl in oral fluid was assessed.
eng
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Fentanyl
Screen-printed electrodesFentanyl voltammetric determination
Forensic science
Oral fluid
Seized drugs
Electrochemical detection of fentanyl with screen-printed carbon electrodes using square-wave adsorptive stripping voltammetry for forensic applications
info:eu-repo/semantics/article
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Ott-jec_2020.pdf.txt