Quimiometría como método de evaluación y clasificación de muestras en el análisis de cocaína en sólidos, disoluciones y tejidos impregnados

Abstract

The present study focused on the relationship that chemometrics has as a procedure in the analysis of cocaine samples and the different devices that use chemometric models for the quantitative and qualitative study of controlled substances. In this way, the general objective is to analyze chemometry as a method of evaluation and classification in the analysis of cocaine for rapid determination of the analyte in the study in samples in solids, solutions and impregnated tissues. Likewise, as specific objectives, it was proposed to investigate chemometrics; establish conventional cocaine analysis methods and describe infrared spectroscopy as a method for cocaine identification. The results of the research made it possible to know that chemometrics uses classification techniques such as principal component analysis, cluster analysis, linear discriminant analysis. Among the cocaine analysis methods are colorimetric tests, chromatography, as well as infrared spectroscopy. It was concluded that in infrared spectroscopy there are procedures such as NIR and MIR that, in combination with chemometric techniques, contribute to the identification of cocaine samples in powder, impregnated materials and in liquids, showing a high degree of accuracy and precision in both procedures. in their respective analyzes, demonstrating that chemometry allows the rapid evaluation and classification (in situ) of the samples in the cocaine analysis without destroying the evidence.