Polyfluorerede forbindelser i mikrobølgeovnspopkornposer

Diana Worm Jensen, Lisa Mølgaard Lehmann, William Høst-Madsen & Bjørk Anine Rimsø

Studenteropgave: Semesterprojekt

Abstrakt

We are exposed of fluorinated compounds by inhalation, dermal exposure and ingestion. Food intake is that type of exposure where we are exposed of the majority of the polyfluorinated compounds. The popcorn packing paper, by the manufacturer KiMs, was extracted with methanol before and after heating. From a visual comparison of the extracts’ 19F-NMR spectra with corresponding spectra shown in Trier et al. (2011b), and by using tables of literature values of relevant chemical Fluor shifts, we have identified the coated polyfluorinated compound, to be ether diPAPs (disubstituted polyfluoroalkyl phosphates) or FTMAPs (fluorotelomer mercarptoalkyl phosphates diesthers).On available basis, we cannot determine which of the two types of compounds we found in our microwave popcorn bags. The total amount of fluorinated compounds was determined to be 96 mg/dm2 packaging. There was not detected any difference in the amount of polyfluorinated compounds bound to the paper, before and after it was heated. This indicates that there was no migration of these compounds in the popcorn in the examined KiMs popcorn bags, and that it is not toxic to eat popcorn from the examined popcorn manufacturer, even though it has been in contact with the packaging, coated with fluorine compounds. It is, however, still important to monitor the amount of PFS in products, since the increased levels in blood serum is suspected of increasing cancer tendencies, hormonal disturbances, influence of embryo development and restrain of gap junction intercellular communication.

UddannelserBasis - Naturvidenskabelig Bacheloruddannelse, (Bachelor uddannelse) Basis
SprogDansk
Udgivelsesdato20 dec. 2012
VejledereTorben Lund

Emneord

  • NMR
  • Human eksponering
  • Perfluorerede forbindelser
  • Toksicitet
  • Xenia Trier
  • diPAP
  • Polyfluorerede forbindelser
  • PFOA
  • PFPE
  • PFOS
  • FTMAP