Application Note: A Cryogen-Free Method for Monitoring Trace Greenhouse Gases in Air
7 August 2014

This Application Note shows how Markes’ thermal desorption (TD) technology for analyzing ‘air toxics’ can also be applied to the detection of the most challenging ultra-volatile greenhouse gases, including tetrafluoromethane, hexafluoroethane, sulfur hexafluoride and nitrous oxide. Detection limits below 1 ppt are demonstrated for sulfur hexafluoride and hexafluoroethane, with excellent peak shape and linearity also being obtained.