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SYSTEMATIC SCREENING OF AQUEOUS FILM-FORMING FOAM (AFFF)-RELATED EMERGING PER- AND POLYFLUOROALKYL SUBSTANCES IN A FIREFIGHTING TRAINING SITE AND SURROUNDING MULTIMEDIA IN CHINA
Zhang, X., B. Qiao, Y. Zhang, T. Zhao, B. Fang, Y. Zhou, M. An, Y. Yao, H. Chen, and H. Sun.
Journal of Hazardous Materials 503:141244(2026)
Filed Under: Research
Filed Under: Research
Multimedia samples, including air, wastewater/river water, soil/sediments, herbaceous plants, and tree bark/leaves, were collected from a typical firefighting site in China. An integrated screening method tailored for AFFF-related PFAS efficiently identified PFAS across multiple media, comprehensively characterizing their contamination profiles in both atmospheric and terrestrial compartments. In total, 122 PFAS in 62 classes were detected. Notably, 18 AFFF-related PFAS were reported for the first time in environmental media, 10 of which were exclusively detectable through the diagnostic fragment-based screening strategy, underscoring the critical role of this strategy in uncovering structurally unknown PFAS. The highest PFAS diversity (113 compounds) was observed in herbaceous plant systems. Air samples contained 51 PFAS, dominated by anionic fluorotelomer-based PFAS and sulfonamide derivatives. A total of 37 and 38 PFAS were identified in tree bark and leaves, respectively, showing a 76% overlap with airborne PFAS profiles. Findings establish firefighting-derived PFAS as an important source of atmospheric contamination, highlighting a critical knowledge gap that warrants further investigation. https://www.sciencedirect.com/science/article/pii/S0304389426002220/pdfft?md5=fc16fcadb4771793c12b9294ad4e4277&pid=1-s2.0-S0304389426002220-main.pdf
Journal of Hazardous Materials 503:141244(2026)
Filed Under: Research
Filed Under: Research
Multimedia samples, including air, wastewater/river water, soil/sediments, herbaceous plants, and tree bark/leaves, were collected from a typical firefighting site in China. An integrated screening method tailored for AFFF-related PFAS efficiently identified PFAS across multiple media, comprehensively characterizing their contamination profiles in both atmospheric and terrestrial compartments. In total, 122 PFAS in 62 classes were detected. Notably, 18 AFFF-related PFAS were reported for the first time in environmental media, 10 of which were exclusively detectable through the diagnostic fragment-based screening strategy, underscoring the critical role of this strategy in uncovering structurally unknown PFAS. The highest PFAS diversity (113 compounds) was observed in herbaceous plant systems. Air samples contained 51 PFAS, dominated by anionic fluorotelomer-based PFAS and sulfonamide derivatives. A total of 37 and 38 PFAS were identified in tree bark and leaves, respectively, showing a 76% overlap with airborne PFAS profiles. Findings establish firefighting-derived PFAS as an important source of atmospheric contamination, highlighting a critical knowledge gap that warrants further investigation. https://www.sciencedirect.com/science/article/pii/S0304389426002220/pdff
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