http://dx.doi.org/10.4322/sc.2016.022

Implementation of a dynamic extraction solvent assisted by sonication (DSASE) matrices erythroxylum coca leaf for subsequent analysis of cocaine by gas chromatography with flame ionization detector (GC-FID))

López, Ángela M.; Alvarez, Eliana; Cortés, Carolina; Rosero-Moreano, Milton; Taborda, Gonzalo; Garzón, William; Bernal, Hernando; Correa, Leonardo

Palavras-chave: Cocaine, gas chromatography with flame ionization detector (GC – FID), dynamic extraction solvent assisted by ultrasound (DSASE), Erythroxylum coca.

Resumo: The sample preparation technique called dynamic-assisted solvent extraction by sonication (DSASE) that uses sound waves to increase the efficiency of extraction of cocaine Erythroxylum coca leaves was implemented, evaluating different solvents and extraction time; for subsequent analysis by gas chromatography with flame ionization detector (GC-FID). The results show that the conditions for obtaining alkaloid are methanol: dichloromethane (20:80 v/v) with 25 min extraction at 50 ° C and 50 Hz; DSASE was coupled to the solid phase extraction (SPE) with conditions 1 mL of ethanol, 2 mL of sample, 1 mL of hexane and 1 mL of methanol: acetonitrile (20:80 v/v) for conditioning, loading, washing and elution respectively


Referências Bibliográficas

[1] A. Brachet, S. Rudaz, L. Mateus, L. Christen, P. Veuthey & J. Luc. Optimisation of accelerated solvent extraction of cocaine and benzoylecgonine from coca leaves. Journal of Separation Science Vol. 24 p. 865-873 Laboratory of Pharmaceutical Analytical Chemistry, University of Geneva, Switzerland (2001).
[2] M. Rosero-Moreano; E. Andrés; C. Domeño; & C, Nerín. Biomonitorización de la contaminación atmosférica en el Himalaya a través de la determinación de PAHs. Zaragoza (Diciembre 2012).
[3] UNODC, & SIMCI. (Junio 2014). Monitoreo de Cultivos de Coca 2013. Colombia: Gobierno de Colombia