ONLINE MULTIPHOTON IONIZATION MASS-SPECTROMETRY APPLIED TO PAH AND FULLERENES IN FLAMES

Authors
AHRENS J KOVACS R SHAFRANOVSKII EA HOMANN KH
Citation
J. Ahrens et al., ONLINE MULTIPHOTON IONIZATION MASS-SPECTROMETRY APPLIED TO PAH AND FULLERENES IN FLAMES, Berichte der Bunsengesellschaft fur Physikalische Chemie, 98(2), 1994, pp. 265-268
Citations number
17
Categorie Soggetti
Chemistry Physical
Journal title
Berichte der Bunsengesellschaft fur Physikalische Chemie
ISSN journal
00059021 → ACNP
Volume
98
Issue
2
Year of publication
1994
Pages
265 - 268
Database
ISI
SICI code
0005-9021(1994)98:2<265:OMIMAT>2.0.ZU;2-4
Abstract
A new approach is presented, that enables on-tine detection of large p olycyclic aromatic hydrocarbons (PAH) and fullerenes in premixed flat low-pressure flames by molecular beam resonance-enhanced multiphoton i onization mass spectrometry (REMPI-MS). A multi-pass mirror system for the laser beam was developed to increase the amount of ions formed. I n benzene/oxygen flames, PAH with molecular masses up to more than 10( 3) u were observed. For the first time, this method has also provided on-line mass spectra of electrically neutral flame-generated fullerene s (C32 to about C300) after the investigation of fullerene flame ions. The fragmentation induced by laser irradiation is discussed.