6:2 Fluorotelomer Ethoxylates in Human Serum and Residential Homes: A Growing Environmental Health Concern
By Yao Cheng, Yan Wang, Xiaodong Wang, Zhong Lv, Fengli Zhou, Baoqin Huang, Xiaotu Liu, and Da Chen
Environ Sci Technol
March 4, 2025
DOI: 10.1021/acs.est.4c10195
As an emerging group of per- and polyfluoroalkyl substances (PFAS), fluorotelomer ethoxylates (FTEOs) are widely employed as a major ingredient in antifog products. However, knowledge about their environmental distribution and human exposure remains scarce. Herein, we reported the ubiquitous detection of 6:2 FTEO homologues in popular antifog products ( = 47), indoor dust from residential homes ( = 80), and serum of pregnant women ( = 90) living in South China, demonstrating broad use and widespread human exposure. The cumulative concentrations of 6:2 FTEOs ranged from below the limit of detection (
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