2026-05-15T08:23:37Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/55972022-09-14T22:42:06Zcom_10259_4376com_10259_5086com_10259_2604col_10259_4377

Ott, Colby E. 27789654-3207-4fe0-b41f-ab0c6c9c8c16 500 Cunha Silva, Hugo 1 500 Kuberski, Sara L e61843f9-3c7f-41f5-9a46-61e8c24d239d 500 Cox, Joseph A. a6bdb80b-e7e9-47a0-989d-6b7656364c21 500 Arcos Martínez, Julia 36 500 0000-0002-4932-6445 Arroyo Mora, Luís E. de99f9ac-2f98-493e-ab7b-79cee9266395 500 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. Awa the National Institute of Justice award 2019-DU-BX-0030. The opinions, findings and conclusions are those of the authors and do not necessarily reflects those of the Department of Justice. Funding was also provided by the Fundación Bancaria Caixa D. Estalvis I Pensions de Barcelona, La Caixa (DIABO-PIF-R00W05). Hugo Cunha-Silva would like to acknowledge funding from the Spanish Ministry of Economy and the European Regional Development Fund (FEDER) (BES-2014-068214). application/pdf eng Elsevier Journal of Electroanalytical Chemistry. 2020, V. 873, 114425 https://doi.org/10.1016/j.jelechem.2020.114425 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Fentanyl Screen-printed electrodesFentanyl voltammetric determination Forensic science Oral fluid Seized drugs Química analítica Chemistry, Analytic Electrochemical detection of fentanyl with screen-printed carbon electrodes using square-wave adsorptive stripping voltammetry for forensic applications info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Journal of Electroanalytical Chemistry 873 114425 TEXT Ott-jec_2020.pdf.txt Ott-jec_2020.pdf.txt Extracted text text/plain 48190 https://riubu.ubu.es/bitstream/10259/5597/5/Ott-jec_2020.pdf.txt 0662c4db1a5ae0f389579031d9d009d4 MD5 5 THUMBNAIL Ott-jec_2020.pdf.jpg Ott-jec_2020.pdf.jpg IM Thumbnail image/jpeg 4387 https://riubu.ubu.es/bitstream/10259/5597/4/Ott-jec_2020.pdf.jpg 5dbd3075bc7993a26bfc0243cfe42e76 MD5 4 LICENSE license.txt license.txt text/plain; charset=utf-8 998 https://riubu.ubu.es/bitstream/10259/5597/3/license.txt aa90105e1c90a1b4fe810649aa967b7d MD5 3 CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 805 https://riubu.ubu.es/bitstream/10259/5597/2/license_rdf 4460e5956bc1d1639be9ae6146a50347 MD5 2 ORIGINAL Ott-jec_2020.pdf Ott-jec_2020.pdf application/pdf 1295090 https://riubu.ubu.es/bitstream/10259/5597/1/Ott-jec_2020.pdf 2526ba9c7f1179414894e92c638c61eb MD5 1 10259/5597 oai:riubu.ubu.es:10259/5597 2022-09-15 00:42:06.63 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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