| Autor: |
Skedung L; RISE Research Institutes of Sweden, Department Materials and Surface Design, Stockholm, Sweden. lisa.skedung@ri.se., Savvidou E; Stockholm University, Department of Environmental Science, Stockholm, Sweden. Eleni.Savvidou@aces.su.se., Schellenberger S; RISE Research Institutes of Sweden, Unit Environment and Sustainable Chemistry, Stockholm, Sweden., Reimann A; RISE Research Institutes of Sweden, Department Materials and Surface Design, Stockholm, Sweden. lisa.skedung@ri.se., Cousins IT; Stockholm University, Department of Environmental Science, Stockholm, Sweden. Eleni.Savvidou@aces.su.se., Benskin JP; Stockholm University, Department of Environmental Science, Stockholm, Sweden. Eleni.Savvidou@aces.su.se. |
| Abstrakt: |
Total fluorine was determined in 45 consumer product samples from the Swedish market which were either suspected or known to contain fluorinated polymers. Product categories included cookware (70-550 000 ppm F), textiles (10-1600 ppm F), electronics (20-2100 ppm F), and personal care products (10-630 000 ppm F). To confirm that the fluorine was organic in nature, and deduce structure, a qualitative pyrolysis-gas chromatography-mass spectrometry (pyr-GC/MS) method was validated using a suite of reference materials. When applied to samples with unknown PFAS content, the method was successful at identifying polytetrafluoroethylene (PTFE) in cookware, dental products, and electronics at concentrations as low as 0.1-0.2 wt%. It was also possible to distinguish between 3 different side-chain fluorinated polymers in textiles. Several products appeared to contain high levels of inorganic fluorine. This is one of the few studies to quantify fluorine in a wide range of consumer plastics and provides important data on the concentration of fluorine in materials which may be intended for recycling, along with insights into the application of pyr-GC/MS for structural elucidation of fluorinated polymers in consumer products. |
