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

被引：26

作者：

AHRENS, J ^{[1
]}

KOVACS, R ^{[1
]}

SHAFRANOVSKII, EA ^{[1
]}

HOMANN, KH ^{[1
]}

机构：

[1] ACAD SCI,INST CHEM PHYS,MOSCOW 117977,RUSSIA

来源：

BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 1994年 / 98卷 / 02期

关键词：

FLAMES; FULLERENES; MASS SPECTROMETRY; MULTIPHOTON PROCESSES;

D O I：

10.1002/bbpc.19940980224

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A new approach is presented, that enables on-tine detection of large polycyclic aromatic hydrocarbons (PAH) and fullerenes in premixed flat low-pressure flames by molecular beam resonance-enhanced multiphoton ionization mass spectrometry (REMPI-MS). A multi-pass mirror system for the laser beam was developed to increase the amount of ions formed. In 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 fullerenes (C32 to about C300) after the investigation of fullerene flame ions. The fragmentation induced by laser irradiation is discussed.

引用

页码：265 / 268

页数：4

共 17 条

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