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Volume 7, Issue 5 (Suppl) J Forensic Res 2016
ISSN: 2157-7145, JFR an open access journal Forensic Research 2016
October 31-November 02, 2016
October 31-November 02, 2016 San Francisco, USA
5th International Conference on
Forensic Research & Technology
A simple methodology for voltammetric quantification of LSD in seized samples
Marcelo Firmino de Oliveira and Erica Naomi Oiye
University of São Paulo, Brazil
LSD is the abbreviation of Lysergic Acid Diethylamide, a hallucinogenic commonly found in blotter, whose numbers associated to
its consumption are rising, mainly in internet market. Despite of various studies in the electrochemical detection for seized drugs,
LSD has not been widely explored. Voltammetric determination provides specific and reliable results, with a simple experimental
procedure. In the present study, we analyzed LSD by Cyclic Voltammetry, with a glassy carbon as working electrode without any
surface modification, using ammonium perchlorate in methanol in the presence of water, composing the supporting electrolyte
solution, in the proportion 95:5 v/v in a potential range from -0.5 V to 1.8 V. From this condition, it was possible to establish a
linear relation between the oxidation peak and the concentration of LSD, with a Limit of Quantification equal to 1.64x10-6 mol
L-1, equivalent to a blotter with just 3.18 µg. After all validation process was applied, it was possible to obtain the quantification of
LSD in a seized sample from the police laboratory. Voltammetric determination might be seen as a promissive alternative for drug
analysis, with portability and quickness as some characteristics for its quantification. From the analytical point of view, the present
methodology ensures trustful and specific results.
Biography
Marcelo Firmino de Oliveira has completed his PhD in Analytical Chemistry from Universidade Estadual Paulista– Instituto de Química, Brazil. He is a Professor
of Analytical Chemistry at Universidade de São Paulo– Departamento de Química - FFCLRP, Brazil. He has published 51 papers in reputed journals. His research
group– GEEQFOr– works with electrochemical analysis and the development of new sensors for illicit drugs.
Marcelo Firmino de Oliveira et al., J Forensic Res 2016, 7:5(Suppl)