Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/9974
Título: Carbon nanotube β-cyclodextrin-modified electrode for quantification of cocaine in seized street samples
Autor: Garrido, Jorge
Borges, F.
Brett, C. M. A.
Garrido, E. Manuela
Palavras-chave: Illicit drugs
Cocaine
Voltammetric sensor
β-cyclodextrin
Carbon nanotubes
Data: 2016
Editora: Springer Verlag
Relatório da Série N.º: Ionics;Vol. 22, Issue 12
Resumo: Detection and quantification of cocaine is a key tool in fields such as police apprehensions and the fight against drug trafficking. Thus, a simple, fast and inexpensive electroanalytical methodology for the determination of cocaine in seized street samples has been developed, employing linear sweep voltammetry. The method is based on the use of a glassy carbon (GC) electrode modified by a combination of multi-walled carbon nanotubes (MWCNT) with β- cyclodextrin (β-CD) incorporated in a polyaniline film. The proposed method shows high reproducibility, repeatability and specificity. Under optimal conditions, the β-CD/ MWCNT-modified GC electrode gives a detection limit of 1.02 μM cocaine. The results obtained are in good agreement with those obtained by the high-performance liquid chromatography reference method. The new methodology proposed has excellent potential as the basis of a portable analytical sensor for on-site screening of cocaine in seized street samples.
URI: http://hdl.handle.net/10400.22/9974
DOI: 10.1007/s11581-016-1765-3
Versão do Editor: https://link.springer.com/article/10.1007/s11581-016-1765-3
Aparece nas colecções:ISEP – DEQ – Artigos

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