Tracking the Spread of PFAS and EOF in Shanghai Soils over a Decade: Insights from 2007, 2012, and 2017.

ABSTRACT: Per- and polyfluoroalkyl substances (PFAS) are ubiquitous contaminants in the soil environment, yet their spatiotemporal distribution and long-term trends remain poorly understood. This study investigated the temporal variations and spatial patterns of legacy and emerging PFAS in soil of Shanghai, China, by analyzing 162 soil samples collected in 2007, 2012, and 2017. The results revealed that sum PFAS concentrations ranged from 110 to 18000 pg/g, with an upward trend over the decade (median levels: 1090, 1190, and 2390 pg/g in 2007, 2012, and 2017, respectively). Long-chain PFAS dominated the contaminant profile with perfluoroalkyl carboxylic acids (PFCAs) (1370-2090 pg/g) consistently exceeding perfluoroalkyl sulfonic acids (PFSAs) (145-466 pg/g). For soil samples collected in 2017, a si

SUBMITTER: Xiao Y 

PROVIDER: S-EPMC12810246 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature