CERC.OCEAN

Halocarbon gases

Agilent 7890B Gas Chromatograph - Mass Spectrometer 5977A

Halocarbon gases concentrations

Methodology

Volatile halocarbons, such as methyl iodide (CH3I), are purged and trapped on an IMT VSP4000 system, then the isolated compounds are carried to a gas chromatograph (GC) equipped with a micro electron capture detector (ECD) and a mass spectrometer. This instrument measures methyl idodie (CH3I), chloriodomethan (CH2ClI), diiodomethan (CH2I2), dibrommethan (CH2Br2) and bromoform (CHBr3).

Associated Projects

Publications

  • Shi, Q., & Wallace, D. (2018). A 3-year time series of volatile organic iodocarbons in Bedford Basin, Nova Scotia: A northwestern Atlantic fjord. Ocean Science, 14(6), 1385–1403. doi: 10.5194/os-14-1385-2018
  • Ibrahim Sadiek, Qiang Shi, Douglas Wallace, Gernot Friedrichs. "Quantitative Mid-Infrared Cavity Ringdown Detection of Methyl Iodide for Monitoring Applications." Analytical Chemistry (2017). DOI: 10.1021/acs.analchem.7b01970