Analysis of cocaine in different samples by gas chromatography flame ionization detector (GCFID)

In this study validate the methods established by the UNODC for quantification and extraction benzometilecgonina (cocaine) in the leaves of Erythhroxylum coca, coca tea and cocaine hydrochloride. The first extraction method recommended by the UNODC is a solid-liquid extraction (ESL), however, the results indicate that this is not efficient enough to achieve analyte signal distinguishable from the signal to noise ratio (S/N) for samples Erythhroxylum coca leaves and coca tea. The second proposed method is soxhlet extraction, the results indicate that this is more efficient to isolate and quantify the analyte of interest by gas chromatography coupled to a flame ionization detector(GCFID). After submitting the samples to the soxhlet extraction process and quantification by GC-FID it found that tea leaf has 7.66x 10(2) mg of cocaine/kg sample, coca leaves 17.15 mg of cocaine/kg sample and cocaine hydrochloride concentration corresponded to 7.15x10s mg of cocaine/kg sample. The chosen analysis method is characterized by low detection limits shed (1.69 mg/L) and possessing ideal chromatographic and statistical parameters.