Determination of perfluorooctanoic acid (PFOA) extractable from the surface of commercial cookware under simulated cooking conditions by LC/MS/MS.
Salts of pentadecafluorooctanoic acid (PFOA) are polymerization aids used in the manufacture of fluoropolymers; one of the applications of fluoropolymers is the coating of metal cookware products. A method was developed to determine if PFOA might be present in and extracted from the surface of commercial frying pans coated with a DuPont fluoropolymer under simulated cooking conditions. Commercial grade cookware was obtained, then extracted with water and ethanol/water mixtures at 100 and 125 degrees C, and the resulting extracts were analyzed by liquid chromatography tandem mass spectrometry (LC/MS/MS). Detection and quantification limits as low as 100 pg cm(-2) were demonstrated. None of the fluoropolymer treated cookware samples analyzed showed detectable levels of PFOA when extracted under simulated cooking conditions.
Powley
Charles R
CR
Haskell Laboratory, E.I. du Pont de Nemours and Company, P. O. Box 50, Newark, DE 19714-0050, USA. Chuck.Powley@usa.dupont.com
Michalczyk
Michael J
MJ
Kaiser
Mary A
MA
Buxton
L William
LW
D002210:Caprylates / Q000032:analysis*; D002853:Chromatography, Liquid; D003297:Cooking and Eating Utensils; D005466:Fluorocarbons / Q000032:analysis*; D005506:Food Contamination; D006801:Humans; D013058:Mass Spectrometry; D014874:Water Pollutants, Chemical / Q000032:analysis*
D002210:Caprylates; D005466:Fluorocarbons; D014874:Water Pollutants, Chemical; C023036:perfluorooctanoic acid