Analysis of Amber Samples by LIBS and Chemometrics Methods

Abstract

We analyzed amber samples from the the Baltic region and Mexico, as well as imitation amber, in order to develop an analytical method allowing to discriminate between different samples causing little or no damage. We propose a two-step method that involves the<br />use of Laser Induced Breakdown Spectroscopy (LIBS) to obtain spectra, and Discriminant Analysis to analyze the resulting data. We studied the damage caused to the samples using confocal optical microscopy.

En el presente trabajo se estudian muestras de ambar del Baltico ´ y de Mexico, asi como ´ ambar de imitacion, con el objetivo de ´ desarrollar un metodo anal ´ ´ıtico que permita discriminar entre diferentes muestras causando m´ınimo dano. Para optimizar la ˜ identificacion se propone un m ´ etodo en t ´ andem, utilizando la t ´ ecnica ´ LIBS para obtener los espectros, y el Analisis Discriminante para el ´ tratamiento de los datos. Se estudia el dano causado a las muestras ˜ por microscop´ıa optica confocal.