Poster Presentations
Day 3, June 12（Fri.） Room P (5F 501+502)
- 3P-10
Non-Target PFAS Characterization Through High-Resolution MS/MS: Legacy Methods and Beyond
(1Tottori Univ. Environ. Studies, 2UOsaka)
oAtsushi Yamamoto1,2, Soichiro Ohara1
Japan’s tentative PFAS water quality standards, established in 2020, will become formally binding in 2026. The USEPA classifies approximately 15,000 substances as PFAS, so individual analysis of every PFAS compound is impractical, and high-resolution MS/MS is essential for broad-scope non-target characterization. Consumer and industrial products—water-repellent sprays, anti-soiling coatings, fire-extinguishing agents, and ski waxes—were diluted and analyzed using high-resolution MS/MS. The samples underwent biodegradability testing with OECD Guideline 301C; degradation products were analyzed alongside the originals. MS/MS data were also evaluated using DreaMS, a self-supervised neural-network model for fluorine-containing ion identification.