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Instrument

P-CIMS
Peroxide Chemical Ionization Mass Spectrometer

The PCIMS instrument is a slightly modified CIMS instrument manufactured by THS Instruments LLC. Mechanically it consists of a differentially pumped quadrupole mass spectrometer. The instrument operates in negative ion mode and currently I- and O2- reagent ions are used to measure hydrogen peroxide and methylhydroperoxide, respectively, by the formation of cluster ions at masses 80 and 161. The reagent ions are produced by flowing a N2/CH3I/O2 mixture past a 210Po foil.

NASA's DC-8 flying laboratory passes Antarctica's tallest peak, Mount Vinson, on Oct. 22, 2012, during a flight over the continent to measure changes in the massive ice sheet and sea ice. Credit: NASA/Michael Studinger (Photography courtesy NASA Images)

Instrument Details

Spectrometer/Radiometer
Earth Science > Atmosphere > Atmospheric Chemistry > Hydrogen Compounds
Earth Science > Atmosphere > Atmospheric Chemistry
Earth Science > Atmosphere > Atmospheric Chemistry > Hydrogen Compounds > Hydroperoxy
Boundary Layer
50 ms
This data will be added in future versions
This data will be added in future versions
https://doi.org/10.5194/amt-11-1901-2018External Link
  • Daniel O'Sullivan, Brian Heikes, John Dykema

  • Daniel O'Sullivan

  • TLC Instruments LLC

  • NSF, Colorado Department of Public Health and Environment

  • Currently unavailable

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