title: Classification of vegetable oils based on their concentration of saturated fatty acids using laser induced breakdown spectroscopy (LIBS).
abstract: Spectrochemical analyses of organic liquid media such as vegetable oils and sweetened water were performed with the use of LIBS. The aim of this work is to study, on the basis of spectral analyses by LIBS technique of "Swan band" of C2 emitted by different vegetable oils in liquid phase, the characteristics of each organic media. Furthermore this paper proposes, as a classification, a single parameter that could be used to determine the concentration of saturated fatty acids of vegetable oils. A Nd:YAG operating at λ=532 nm and an energies per pulse of 30 mJ was focused onto the surface of the liquid in ambient air. Following ablation of vegetable oils and sweetened water, we find that vibrational bonds of C2 were released from the molecule containing carbon-carbon bonds linear. In the case of vegetable oils, we find a clear relationship between C2 emission from the plasma and the concentration of saturated fatty acids in the oil.
authors.affiliation: Laboratory of Spectroscopy of Atomic Molecular and Applications - LSAMA, Faculty of Sciences of Tunis, University of Tunis, Tunis, Tunisia; Centre for Atomic Molecular Physics and Quantum Optics - CEPAMOQ, Faculty of Science, University of Douala, Douala, Cameroon. Electronic address: yvonmbesse@yahoo.fr.
authors.forename: Yvon G
authors.initials: YG
authors.lastname: Mbesse Kongbonga
authors.forename: Hassen
authors.initials: H
authors.lastname: Ghalila
authors.forename: Marthe Boyomo
authors.initials: MB
authors.lastname: Onana
authors.forename: Zohra
authors.initials: Z
authors.lastname: Ben Lakhdar
mesh_terms: D005227:Fatty Acids / Q000032:analysis*; D010938:Plant Oils / Q000737:chemistry* / Q000145:classification; D013057:Spectrum Analysis / Q000295:instrumentation / Q000379:methods*
chemical_list: D005227:Fatty Acids; D010938:Plant Oils
keywords: Fatty acids; Saccharose; Vegetable oils; Vibrational bonds of C(2)