Application Note: Measurement of PFAS in indoor air and investigation of source materials
16 August 2023

In this application note, Markes investigates the performance of its TD100-xr™ high-throughput automated thermal desorption (TD) instrument. The instrument is coupled to a gas chromatograph (GC) and a triple quadrupole mass spectrometer (MS/MS) for PFAS analysis. This combination enables measurement of per- and polyfluoroalkyl substances (PFAS) in indoor air, detecting levels as low as 1 pg for Me-FOSA. When utilizing sampling chambers to test materials, it becomes possible to identify the PFAS released into indoor air and quantify the emission rate of such release.