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Progress in Plasma Processing of Materials, 2001

ISBN:
1-56700-165-3 (Print)

ANALYSIS OF POLLUTED SURFACES BY TIME RESOLVED LASER INDUCED BREAKDOWN SPECTROSCOPY

S. Morel
Centre d'Etudes du Bouchet, Direction des Centres d'Expertise et d'Essais, BP 3,91710 Vert-le-Petit, FRANCE

P. Adam
Section détection physique, Centre d’Etudes du Bouchet, Direction des Centres d'Expertise et d'Essais, Delegation Generate pour l’Armement, BP 3, 91710 Vert le Petit, France

Jacques Amouroux
Laboratoire de Genie des Precedes Plasmas Universite P. et M. Curie, ENSCP 11 rue P. et M. Curie 75005 Paris France

Abstract

Detection limits for the main heteroatoms in pollutants and chemical agents have been determined in atmospheric conditions with the use of the time resolved laser-induced breakdown spectroscopy (TRELIBS) method. This method presents many advantages for detection in hazardous or corrosive gas mixtures where sampling systems are not usable. Moreover, low concentrations of fluorine, chlorine, phosphorus, sulfur and carbon can be measured with short analysis time. Results from gas analysis led us to determine the possibilities of this method to detect these atoms on targets (PVC and PTFE). We have studied parameters of plasma creation and spectrum acquisition to find the optimal working conditions of the experimental setup.