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https://locus.ufv.br//handle/123456789/21462
Tipo: | Artigo |
Título: | Voltammetric determination of ∆^9 -THC in glassy carbon electrode: An important contribution to forensic electroanalysis |
Autor(es): | Okumura, Leonardo Luiz Balbino, Marco Antonio Menezes, Matheus Manoel Teles de Eleoterio, Izabel Cristina Saczk, Adelir Aparecida Tristao, Heloısa Maria Oliveira, Marcelo Firmino de |
Abstract: | A new voltammetric method for the determination of ∆^9- tetrahydrocannabinol (∆^9-THC) is described. The voltammetric experiments were accomplished in N-N dimethylformamide/water (9:1, v/v), using tetrabutylammonium tetrafluoroborate (TBATFB) 0.1 mol/L as supporting electrolyte and a glassy carbon disk electrode as the working electrode. The anodic peak current was observed at 0.0 V (vs. Ag/AgCl) after a 30 s pre-concentration step under an applied potential of À1.2 V (vs. Ag/AgCl). A linear dependence of ∆^9-THC detection was obtained in the concentration range 2.4–11.3 ng/mL, with a linear correlation coefficient of 0.999 and a detection limit of 0.34 ng/mL. The voltammetric method was used to measure the content of ∆^9-THC in samples (hemp and hashish) confiscated by the police. The elimination of chemical interferences from the samples was promptly achieved through prior purification using the TLC technique, by employing methanol/water (4:1, v/v) as the mobile phase. The results showed excellent correlation with results attained by HPLC. |
Palavras-chave: | Tetrahydrocannabinol Forensic electroanalysis Voltammetry Criminalistics Hemp Hashish |
Editor: | Forensic Science International |
Tipo de Acesso: | Elsevier Ireland Ltd. |
URI: | https://doi.org/10.1016/j.forsciint.2012.03.020 http://www.locus.ufv.br/handle/123456789/21462 |
Data do documento: | 10-Set-2012 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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artigo.pdf Until 2100-12-31 | texto completo | 316,92 kB | Adobe PDF | Visualizar/Abrir ACESSO RESTRITO |
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