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Hafner, K.* ; Zimmermann, R. ; Rohwer, E.* ; Dorfner, R. ; Kettrup, A.

A capillary-based supersonic jet inlet system for resonance-enhanced laser ionization mass spectrometry : Principle and First on-line process analytical applications.

Anal. Chem. 73, 4171-4180 (2001)
DOI
Open Access Green as soon as Postprint is submitted to ZB.
A new supersonic jet inlet system for resonance-enhanced multiphoton ionization time-of-flight mass spectrometry (REMPI-TOFMS), based on a fused-silica capillary with an integral nozzle has been developed. The new jet inlet system generates a supersonic molecular beam that originates in the center of the ion source of the time-of-flight mass spectrometer. Because of the design of the inlet system, high spatial overlap of sample and laser beam (i.e., increased detection sensitivity) and excellent let beam qualities are achieved with good adiabatic cooling properties of analyte molecules (i.e., considerably enhanced optical selectivity of the REMPI process). Furthermore, the inlet is very robust and chemically inert and contains no moving parts. As a result of these properties, the new inlet is perfectly suited for field applications of jet-REMPI. A first field application of a mobile supersonic jet-REMPI mass spectrometer equipped with the novel inlet technique is reported; namely, the concentration of monochlorobenzene, which is an indicator for the formation and emission of toxic polychlorinated dibenzo-p-dioxins/furans, PCDD/F) was measured on-line in the flue gas of a waste incineration plant.
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Publication type Article: Journal article
Document type Scientific Article
Keywords polycyclic aromatic-hydrocarbons; standard gaseous-mixtures; incineration pilot-plant; gas-chromatography; multiphoton ionization; 2-photon ionization; flue-gases; chlorinated aromatics; polyatomic-molecules; waste incinerator
ISSN (print) / ISBN 0003-2700
e-ISSN 1520-6882
Journal Analytical Chemistry
Quellenangaben Volume: 73 , Issue: 1, Pages: 4171-4180 Article Number: , Supplement: ,
Publisher American Chemical Society (ACS)
Reviewing status Peer reviewed
Institute(s) Institute of Ecological Chemistry (IOEC)