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On-line measurement of chlorobenzene in waste incineration flue gas as a surrogate for the emission of polychlorinated dibenzo-p-dioxins/furans (I-TEQ) using mobile resonance laser ionization time-of-flight mass spectrometry

1999; Wiley; Volume: 13; Issue: 5 Linguagem: Inglês

10.1002/(sici)1097-0231(19990315)13

1097-0231

Ralf Zimmermann, Hans Jörg Heger, M. Blumenstock, Ralph Dorfner, Karl‐Werner Schramm, Ulrich Boesl, Antonius Kettrup,

Atmospheric chemistry and aerosols

Mobile resonance-enhanced multiphoton ionization time-of-flight mass spectrometry (REMPI-TOFMS) was applied for on-line detection of surrogates for polychlorinated dibenzo-p-dioxins/furans (PCDD/F) in the flue gas of an industrial hazardous waste incineration plant (thermal power: 22 MW). Conventional gas chromatography/mass spectrometry (GC/MS) measurements have been performed to establish an indicator relation between the best suited surrogate (monochlorobenzene) and the PCDD/F concentration in the flue gas (measured in international toxicity equivalents, I-TEQ). The indicator relation allows the estimation of the actual PCDD/F emission from the on-line registered MCBz signal. Furthermore, several other aromatic components have been measured on-line. During transient instabilities of the combustion conditions, e.g. due to barrel uptake, highly dynamic changes in the emission profiles of substituted benzenes and polycyclic aromatic hydrocarbons (PAH) were observed. Copyright © 1999 John Wiley & Sons, Ltd.