Non-Target and Suspect Screening of Per- and Polyfluoroalkyl Substances in Airborne Particulate Matter in China

• DOI: 10.1021/acs.est.8b02492
• Publication Date: 2018-07-16T07:13:05Z
• Authors: Nanyang Yu; Huiwei Guo; Jingping Yang; Ling Jin; Xuebing Wang; Wei Shi; Xiaowei Zhang; Hongxia Yu; Si Wei
• Keywords: Suspect

Airborne particulate matter (APM) has an important role in inhalation exposure, especially China. The environmental occurrence of conventional and unknown per- polyfluoroalkyl substances (PFASs) APM remains unclear. Therefore, this study, a two-stage experiment was designed to identify potential PFASs investigate their distribution APM. Indoor outdoor samples were collected from five selected cities Through PFAS homologue analysis suspect screening, 50 peaks identified with different confidence levels (levels 1–3). Among the PFASs, 34 emerging including p-perfluorous nonenoxybenzenesulfonate, 6:2 phosphate diester, n:2 fluorotelomer sulfonates, fluorinated telomer acids, chlorinated ether sulfonic 1:n carboxylic acids (1:n PFECAs), perfluoroalkyl dioic (PFdiOAs), hydro-substituted (H-PFdiOAs), unsaturated perfluorinated alcohols (UPFAs) In particular, PFECAs, PFdiOAs, H-PFdiOAs, UPFAs first detected Although human exposure perfluorooctanoic acid via inhaled noted not be risk (hazard quotient <0.1) expansion screened implies that might much more serious should considered future assessments