How Do We Measure Poly- and Perfluoroalkyl Substances (PFASs) at the Surface of Consumer Products?: Environmental Science and Technology LETTERS.

ABSTRACT: Exposures to poly- and perfluoroalkyl substances (PFASs) have been linked to metabolic disruption, immunotoxicity and cancer in humans. PFASs are known to be present in diverse consumer products including textiles and food packaging. Here we present a new method for quantifying the atomic percent fluorine (% F) in the surficial 0.01 μm of consumer products using X-ray photoelectron spectroscopy (XPS). The surface of food contact materials and textiles measured in this study contained up to 28% F and 45% F, respectively. PTFE tape was measured to demonstrate XPS accuracy and precision. Depth profiles of fluorine content in consumer products measured using XPS showed highest levels at the upper-most surface in contact with the surrounding environment and a decrease below the surface. PFASs r

SUBMITTER: Tokranov AK 

PROVIDER: S-EPMC7713715 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature