Location of Repository

Technical Note: Performance of Chemical Ionization Reaction Time-of-Flight Mass Spectrometry (CIR-TOF-MS) for the measurement of atmospherically significant oxygenated volatile organic compounds.

By Kevin Paul Wyche, R.S. Blake, Andrew M. Ellis, Paul S. Monks, T. Brauers, R. Koppmann and E.C. Apel

Abstract

The performance of a new chemical ionization reaction time-of-flight mass spectrometer (CIR-TOF-MS) utilising the environment chamber SAPHIR (Simulation of Atmospheric\ud Photochemistry In a large Reaction Chamber-\ud Forschungzentrum J¨ulich, Germany) is described. The work took place as part of the ACCENT (Atmospheric Composition and Change the European NeTwork for excellence) supported oxygenated volatile organic compound (OVOC) measurement intercomparison during January 2005. The experiment entailed the measurement of 14 different atmospherically significant OVOCs at various mixing ratios in the approximate range 10.0–0.6 ppbV. The CIR-TOF-MS operated throughout the exercise with the hydronium ion (H3O+) as\ud the primary chemical ionization (CI) reagent in order to facilitate proton transfer to the analyte OVOCs. The results presented show that the CIR time-of-flight mass spectrometer is capable of detecting a wide range of atmospheric OVOCs at mixing ratios of around 10 ppbV in “real-time” (i.e. detection on the one-minute time scale), with sub-ppbV measurement also achieved following an increase in averaging time to\ud tens of minutes. It is shown that in general OVOC measurement is made with high accuracy and precision, with integration time, mixing ratio and compound dependent values as good as 4–13% and 3–15% respectively. It is demonstrated that CIR-TOF-MS has rapid multi-channel response at the required sensitivity, accuracy and precision for atmospheric OVOC measurement

Publisher: Copernicus GmbH
Year: 2007
OAI identifier: oai:lra.le.ac.uk:2381/311

Suggested articles

Preview

Citations

  1. (2005). A hollow cathode proton transfer reaction time of flight mass spectrometer, doi
  2. (2006). A novel discharge source of hydronium ions for proton transfer reaction ionization: design, characterization, and performance, doi
  3. (1993). An Ion/MoleculeReaction Mass-Spectrometer Used For Online Trace GasAnalysis, doi
  4. (1995). Chemical Instrumentation,
  5. (2004). Demonstration of proton-transfer reaction time-of-flight mass spectrometry for real-time analysis of trace volatile organic compounds, doi
  6. Differentiation of isobaric compounds using chemical ionization reaction mass spectrometry, Rapid Communications in Mass Spectrometry, doi
  7. (2007). Energy dependencies of the proton transfer rewww.atmos-chem-phys.net/7/609/2007/
  8. (2006). European hydrocarbon intercomparison experiment AMOHA part 4: Canister sampling of ambient air, doi
  9. (2004). Evaluation of the role of heterogeneous oxidation of alkenes in the detection of atmospheric acetaldehyde, doi
  10. (2005). Gas-phase radical chemistry in the troposphere, doi
  11. (1995). HighConcentrations And Photochemical Fate of Oxygenated Hydrocarbons doi
  12. (2004). Identification of polymers as major components of atmospheric organic aerosols, doi
  13. (2000). Influence of water vapour on selected ion flow tube mass spectrometric analyses of trace gases in humid air and breath, doi
  14. (1998). Isoprene and its oxidation products methyl vinyl ketone, methacrolein, and isoprene related peroxides measured online over the tropical rain forest of Surinam in
  15. (2004). Kinetic Study of the OH-isoprene and O3-isoprene reaction in the atmosphere simulation chamber, doi
  16. (2005). Multi axis differential optical absorption spectroscopy (MAX-DOAS) of gas and aerosol distributions, doi
  17. (2004). Online volatile organic compound measurements using a newly developed proton-transfer ion-trap mass spectrometry instrument during New England Air Quality Study – Intercontinental Transport and Chemical Transformation doi
  18. (2003). Proton transfer reaction mass spectrometry at high drift tube pressure, doi
  19. (1995). Proton-Transfer Reaction Mass-Spectrometry – Online Trace Gas-Analysis At The Ppb Level, doi
  20. (1995). Reactions of Hydrated Hydronium Ions And Hydrated Hydroxide Ions, With Some Hydrocarbons And Oxygen-Bearing Organic-Molecules, doi
  21. (2003). Validation of Atmospheric VOC Measurement by Proton-Transfer-Reaction Mass Spectrometry using a GasChromatographic Preparation Method, doi
  22. (2002). Validation of proton transfer reaction-mass spectrometry (PTR-MS) measurements of gas-phase organic compounds in the atmosphere during the New England Air Quality Study (NEAQS) in doi
  23. (2007). Wyche et al.: Measurement of atmospherically significant oxygenated volatile organic compounds 619 doi

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.