479864 Particle-Induced Gamma-ray Emission (PIGE) as a Novel Detection Method for PFAS in Personal Care Products

Monday, November 14, 2016
Grand Ballroom B (Hilton San Francisco Union Square)
Shannon Urbanik1, Megan E. Czmer2, Brieana K. Linton2, John P. Harron2, Jane A. Sedlak3, Paul A. DeYoung4 and Graham F. Peaslee2, (1)Engineering, Hope College, Holland, MI, (2)Chemistry, Hope College, Holland, MI, (3)Chemistry, Oberlin College, Oberlin, OH, (4)Physics, Hope College, Holland, MI

Per- and polyfluoroalkyl substances (PFASs) have been widely used in industry for their well-known water-repellent qualities and surfactant properties.  Because of the environmental persistence of PFASs, their ability to bioaccumulate, and their suspected human toxicity, new methods to identify these chemicals at trace levels in personal care products (such as cosmetics) are needed. Particle induced gamma-ray emission (PIGE) spectroscopy is an established ion beam analysis technique that has been used to quantitatively measure light elements in diverse target materials including water, soil, fabric, and paper samples.  Since the total fluorine measured by PIGE in other sampling media has correlated well with the organofluorine content, PIGE was further employed to act as a screening process for PFASs in personal care products such as mascaras, skin and lip care products, eye shadows, eyeliners, and make-up primers.   Subsequent experiments with cosmetic samples from a range of brands demonstrate PIGE to be an inexpensive, rapid, and non-destructive method for total fluorine analysis, which can be adapted to detect environmentally relevant PFASs in care products. 

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