Titre :

Detection of minor compounds in complex mineral samples from millions of spectra: A new data analysis strategy in LIBS imaging

Auteur(s) :

Nardecchia, Alessandro [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Fabre, Cécile [Auteur]
GeoRessources
Cauzid, Jean [Auteur]
GeoRessources
Pelascini, Frédéric [Auteur]

Motto-Ros, Vincent [Auteur]
Institut Lumière Matière [Villeurbanne] [ILM]
Duponchel, Ludovic [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516

Titre de la revue :

Analytica Chimica Acta

Numéro :

1114

Pagination :

66-73

Date de publication :

2020

Discipline(s) HAL :

Planète et Univers [physics]/Sciences de la Terre

Résumé en anglais : [en]

Today, Laser-Induced Breakdown Spectroscopy (LIBS) imaging is in full change. Indeed, always more stable instrumentations are developed, which significantly increases the signal quality and naturally the analytical potential ...
Lire la suite >Today, Laser-Induced Breakdown Spectroscopy (LIBS) imaging is in full change. Indeed, always more stable instrumentations are developed, which significantly increases the signal quality and naturally the analytical potential of the technique for the characterization of complex and heterogeneous samples at the micro-scale level. Obviously, other intrinsic features such as a limit of detection in the order of ppm, a high field of view and high acquisition rate make it one of the most complete chemical imaging techniques to date. It is thus possible in these conditions to acquire several million spectra from one single sample in just hours. Managing big data in LIBS imaging is the challenge ahead. In this paper, we put forward a new spectral analysis strategy, called embedded k-means clustering, for simultaneous detection of major and minor compounds and the generation of associated localization maps. A complex rock section with different phases and traces will be explored to demonstrate the value of this approach.Lire moins >

Audience :

Non spécifiée

Vulgarisation :

Non

Établissement(s) :

ENSCL
CNRS
Université de Lille

Collections :

• Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516

Équipe(s) de recherche :

Propriétés magnéto structurales des matériaux (PMSM)

Date de dépôt :

2024-02-21T17:12:00Z
2024-02-23T11:08:28Z
2024-02-23T11:43:00Z