Voltammetric determination of ∆^9 -THC in glassy carbon electrode: An important contribution to forensic electroanalysis

dc.creatorOkumura, Leonardo Luiz
dc.creatorBalbino, Marco Antonio
dc.creatorMenezes, Matheus Manoel Teles de
dc.creatorEleoterio, Izabel Cristina
dc.creatorSaczk, Adelir Aparecida
dc.creatorTristao, Heloısa Maria
dc.creatorOliveira, Marcelo Firmino de
dc.date2018-08-28T11:28:55Z
dc.date2018-08-28T11:28:55Z
dc.date2012-09-10
dc.date.accessioned2023-09-27T22:02:54Z
dc.date.available2023-09-27T22:02:54Z
dc.identifier03790738
dc.identifierhttps://doi.org/10.1016/j.forsciint.2012.03.020
dc.identifierhttp://www.locus.ufv.br/handle/123456789/21462
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8969948
dc.descriptionA 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.
dc.formatpdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherForensic Science International
dc.relationv. 221, n. 1– 3, p. 29- 32, set. 2012
dc.rightsElsevier Ireland Ltd.
dc.subjectTetrahydrocannabinol
dc.subjectForensic electroanalysis
dc.subjectVoltammetry
dc.subjectCriminalistics
dc.subjectHemp
dc.subjectHashish
dc.titleVoltammetric determination of ∆^9 -THC in glassy carbon electrode: An important contribution to forensic electroanalysis
dc.typeArtigo


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