Determination of gaseous organofluoro compounds in off-gas from thermal treatment of perfluorooctanoic acid(PFOA) adsorbed onto granular activated carbon(GAC) was studied. Atmospheric pressure helium radiofrequency barrier discharge atomic emission sp...
Determination of gaseous organofluoro compounds in off-gas from thermal treatment of perfluorooctanoic acid(PFOA) adsorbed onto granular activated carbon(GAC) was studied. Atmospheric pressure helium radiofrequency barrier discharge atomic emission spectroscopy(He-rfBD-AES) to determine gaseous organofluoro compounds was optimized to achieve detection limit of 6.9 ngF. Thermal treatment of PFOA on GAC in nitrogen stream at 700 °C was tested in laboratory. Mineralized fluorine, remaining perfluorocarboxylic acids and gaseous organofluoro compounds were determined to be 33.2%, less than 0.05% and 13.2%. However, 53.6% was still missing.