Ionic Liquid-Modified Disposable Electrochemical Sensor Strip for Analysis of Fentanyl
| Autor: | Abbas Barfidokht, Joseph Wang, Rupesh K. Mishra, Zhanhong Li, Sarah A. Goodchild, Lee J. Hubble, Alastair J. S. McIntosh, Rushabh Shah, K. Yugender Goud, Kara Bagot |
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| Rok vydání: | 2019 |
| Předmět: |
Inorganic chemistry
Ionic Liquids 010402 general chemistry Electrochemistry 01 natural sciences Redox Analytical Chemistry Fentanyl chemistry.chemical_compound medicine Humans Imide Disposable Equipment 010401 analytical chemistry Electrochemical Techniques 0104 chemical sciences Electrochemical gas sensor Anode Analgesics Opioid chemistry Ionic liquid Electrode Drug Contamination Oxidation-Reduction medicine.drug |
| Zdroj: | Analytical chemistry. 91(5) |
| ISSN: | 1520-6882 |
| Popis: | The increasing prevalence of fentanyl and its analogues as contaminating materials in illicit drug products presents a major hazard to first responder and law enforcement communities. Electrochemical techniques have the potential to provide critical information to these personnel via rapid, facile field detection of these materials. Here we demonstrate the use of cyclic square wave voltammetry (CSWV) with screen-printed carbon electrodes (SPCE), modified with the room temperature ionic liquid (RTIL) 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide [C4C1pyrr][NTf2], toward such rapid "on-the-spot" fentanyl detection. This CSWV-based disposable sensor strip system provides an information-rich electrochemical fingerprint of fentanyl, composed of an initial oxidation event at +0.556 V (vs Ag/AgCl) and a reversible reduction and oxidation reaction at -0.235 and -0.227 V, respectively. The combined current and potential characteristics of these anodic and cathodic fentanyl peaks, generated using two CSWV cycles, thus lead to a distinct electrochemical signature. This CSWV profile facilitates rapid (1 min) identification of the target opioid at micromolar concentrations in the presence of other cutting agents commonly found in illicit drug formulations. The new protocol thus holds considerable promise for rapid decentralized fentanyl detection at the "point of need". |
| Databáze: | OpenAIRE |
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