Community Research and Development Information Service - CORDIS


Correct characterisation of particulate samples with respect to polyaromatic hydrocarbons (PAH) requires analysis of the continuous phases in the sample, combined with extensive physico-chemical examination of the particle background. Using a modified Lamma 500 microprobe (laser microprobe mass analyser) permitting variation of the photon energy of the laser beam, it is possible to desorb the PAH at weak irradiance from their support, even when they are adsorbed onto very small particles. In the first part of this report, a special procedure is described for obtaining a characterisation, both mineral and organic, of the analysis of the particulate matter. To demonstrate the feasibility of the suggested procedure, results obtained from studying a range of different types of particulate specimen are presented. The second part consists of a more fundamental analysis of the ionisation processes with resonance effects on direct, solid-phase irradiation of the material.

Additional information

Authors: VERDUN F R, Université de Metz, Laboratoire de spectrométrie de masse et de chimie laser, Metz (FR)
Bibliographic Reference: EUR 13197 FR (1991) 174 pp., FS, ECU 15
Availability: (2)
ISBN: ISBN 92-826-2336-X
Record Number: 199110472 / Last updated on: 1994-12-02
Original language: fr
Available languages: fr