Application Note: Detection of ozone-depleting substances and halogenated GHGs
11 April 2024

China has phased out chlorofluorocarbons (CFCs) and is gradually phasing out hydrochlorofluorocarbons (HCFCs), while hydrofluorocarbons (HFCs), although not harmful to the ozone layer, have a potent greenhouse effect and were added to the Montreal Protocol in 2016. Markes International presents a quantitative analysis method for ozone-depleting substances (ODS) and halogenated greenhouse gases (GHGs) without cryogen, meeting detection limit and data quality requirements outlined by the China National Environmental Monitoring Centre. The analysis system includes a canister autosampler, water vapor removal device, thermal desorption instrument, and GC-MS analyzer in SIM mode, capable of monitoring samples with 100% relative humidity and analyzing 34 ODS and halogenated GHGs qualitatively and quantitatively.