Time-resolved monitoring of aromatic compounds in an experimental incinerator using an improved jet-resonance-enhanced multi-photon ionization system Jet-REMPI

Thanner, R.; Oser, Harald; Grotheer, Horst-Henning

doi:10.1255/ejms.213

Cited by 27 publications

(15 citation statements)

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“…Mass spectrometer based techniques have shown promise for field deployment in a wide variety of scenarios, and are a very powerful analytical technique, especially when used in conjunction with laser photoionization. In particular, this technique has shown a high potential for the rapid, selective and sensitive analysis of complex matrices such as monitoring waste incineration processes or the time resolved analysis of the exhaust from diesel engines [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Laser photoionization of triacetone triperoxide (TATP) by femtosecond and nanosecond laser pulses

Mullen

Huestis

Coggiola

et al. 2006

International Journal of Mass Spectrometry

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Section: Introductionmentioning

confidence: 99%

Laser photoionization of triacetone triperoxide (TATP) by femtosecond and nanosecond laser pulses

Mullen

Huestis

Coggiola

et al. 2006

International Journal of Mass Spectrometry

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“…A single-predictor regression model using these M10 concentrations versus the EPA Method 23 TEQ concentrations (ranging from 0.90 ng TEQ/Nm 3 to 25.50 ng TEQ/Nm 3 resulted in a best-fit model (R 2 = 0.7420) for TEQ using MClBz. MClBz was previously detected in the flue gas of an incinerator using REMPI-TOFMS (Thanner et al, 1998 and by SPI-IT-TOFMS (Kuribayashi et al, 2005).…”

Section: Pre-etv Resultsmentioning

confidence: 99%

Temporal and Modal Characterization of DoD Source Air Toxic Emission Factors

Gullett¹

2010

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This project tested three, real-/near real-time monitoring techniques to develop air toxic emission factors for Department of Defense (DoD) platform sources. These techniques included resonance enhanced multi photon ionization time of flight mass spectrometry (REMPI-TOFMS) for organic air toxics, laser induced breakdown spectroscopy (LIBS) for metallic air toxics, and optical remote sensing (ORS) methods for measurement of criteria pollutants and other hazardous air pollutants (HAPs). Conventional emission measurements were used for verification of the real-time monitoring results. The REMPI-TOFMS system was demonstrated on the following ? a United States U.S. Marine Corps (USMC) diesel generator ? a U.S. Air Force auxiliary power unit (APU) ? the waste combustor at the Portsmouth Naval Shipyard, during a multi-monitor Environmental Technology Verification (ETV) test for dioxin monitoring systems ? two dynamometer-driven high mobility multipurpose wheeled vehicles (HMMWVs) ? an idling Abrams battle tank ? a Bradley infantry fighting vehicle (IFV), and ? an F-15 and multiple F-22 U.S. Air Force aircraft engines. LIBS was tested and applied solely to the U.S. Marine Corps diesel generator. The high detection limits of LIBS for toxic metals limited its usefulness as a real time analyzer for most DoD sources. ORS was tested only on the APU with satisfactory results for non-condensable combustion products [carbon monoxide (CO), carbon dioxide (CO2)] but with limited success on condensable volatile organic by-products. This program demonstrated the ability to measure trace aromatics with REMPI-TOFMS in harsh environments and with a high degree of accuracy and precision.

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“…7,28,29 The point at which this occurs in our system depends on the maximum height in the open state of the upper plate of the injector valve for the pulsed gas ͑described in Sec. II A͒ and the shape and size of the injector nozzle.…”

Section: B Gas Pulse Dynamics and Determination Of The Irradiation Pmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9][10][11][12] A particularly important application is in the detection and monitoring of the organohalogen compounds polychlorinated dibenzo-p-dioxin and polychlorinated dibenzofurans ͑PCDD/Fs͒, two critical environmental pollutants.…”

Section: Introductionmentioning

confidence: 99%

“…These spectra were obtained using supersonic jet flows, through jet-REMPI. [7][8][9] However, up to now neither mass spectra without fragmentation nor REMPI spectra of 4-chlorinated or more highly chlorinated PCDD/Fs have been reported. Investigators have thought that pico-or femtosecond laser pulses would be required to obtain spectra of highly chlorinated PCDD/Fs because of the supposed short lifetimes of their excited states.…”

Section: Introductionmentioning

confidence: 99%

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Multipass laser mass spectrometer with extreme jet-cooled pulsed gas

Kirihara¹,

Takahashi²,

Kitada³

et al. 2006

Review of Scientific Instruments

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We have developed a photon accumulated laser mass spectrometer that enables us to identify isomers of polychlorinated dibenzo-p-dioxin and polychlorinated dibenzofuran. This system is comprised of a high temperature ͑230°C͒ pulsed gas injector ͑PGI͒, multimirror multipath system ͑MMS͒, and the conventional time-of-flight mass spectrometer. The PGI induces the formation of a choked supersonic jet gas pulse that cools down to a temperature to restrain fragmentation and reduces vibrational and rotational thermal noises. The results suggest that the excited lifetime numbers and fragment dynamics of these species change completely with jet cooling of molecules. The MMS enhances the soft ionization efficiency ͑by a factor of 1000 over a single path system͒ through photon accumulation by extending the irradiation duration ͑to about 40 ns͒ and volume, and it further minimizes fragmentation by carefully controlling the laser intensity distribution within the ionization volume. For the typical isomer 2,3,4,7,8-pentachlorodibenzofuran, the system achieved a detection threshold ͑S/N ratio= 3͒ of 410 ppq ͑equivalent to 4.4 ng/ N m 3 ͒.

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Time-resolved monitoring of aromatic compounds in an experimental incinerator using an improved jet-resonance-enhanced multi-photon ionization system Jet-REMPI

Cited by 27 publications

References 1 publication

Laser photoionization of triacetone triperoxide (TATP) by femtosecond and nanosecond laser pulses

Laser photoionization of triacetone triperoxide (TATP) by femtosecond and nanosecond laser pulses

Temporal and Modal Characterization of DoD Source Air Toxic Emission Factors

Multipass laser mass spectrometer with extreme jet-cooled pulsed gas

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