Results 171 to 180 of about 6,778 (206)

Review on perfluoroalkyl and polyfluoroalkyl substances (PFASs) in the Chinese atmospheric environment

Science of the Total Environment, 2020
Perfluoroalkyl and polyfluoroalkyl substances (PFASs) have been manufactured and used for over 50 years, and now are worldwide distributed in the environment. The atmospheric environment is the main compartment for PFASs to be transported and transformed,
Paul K S Lam, Qi Wang, Huiju Lin
exaly   +2 more sources

Australia-wide assessment of perfluoroalkyl substances (PFASs) in landfill leachates

Journal of Hazardous Materials, 2017
Leachate from 27 landfills was analysed for nine perfluoroalkyl substances (PFASs). Five PFASs were detected ubiquitously, with perfluorohexanoate (PFHxA) the predominant PFAS (mean 1700 ng/L; range 73–25,000 ng/L).
Christie Gallen, Geoff Eaglesham, J F Mueller   +2 more
exaly   +2 more sources

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Recent progress in the detection of emerging contaminants PFASs

Journal of Hazardous Materials, 2021
As an emerging contaminant, per- and polyfluoroalkyl substances (PFASs) make up a large group of persistent anthropogenic chemicals, which are difficult to degrade in the environment. Notwithstanding their wide range of applications in consumer products and industrial processes, PFASs have been detected in the environment as well as in human body.
Heejeong Ryu, Baikun Li, Sylvain De Guise, Jeffrey McCutcheon, Yu Lei   +4 more
openaire   +2 more sources

PFASs in the General Population

2015
Perfluoroalkyl and polyfluoroalkyl substances (PFASs) have been manufactured since the 1950s for use as surface protectants for textiles and leather treatment, as protection additives in food packaging and paper products, and in firefighting foams. Some PFASs are persistent in the environment and in people, and can be transported to remote regions. The
Kayoko Kato, Xiaoyun Ye, Antonia M. Calafat   +2 more
openaire   +1 more source

Legacy and emerging per- and polyfluoroalkyl substances (PFASs) in multi-media around a landfill in China: Implications for the usage of PFASs alternatives

Science of The Total Environment, 2021
To date, per- and polyfluoroalkyl substances (PFASs) in environmental media surrounding landfills have not attracted much attention. In this study, six legacy PFASs, six short-chain analogues and five emerging alternatives were investigated in groundwater, surface water and sediment samples taken in the vicinity of a valley-type landfill, which had ...
Chang Xu, Zhaoyang Liu, Xin Song, Xiaoyan Ding, Da Ding   +4 more
openaire   +2 more sources

The perfluoroalkyl substances (PFASs) contamination of fruits and vegetables

Food Additives & Contaminants: Part A, 2018
Fruit and vegetables play a major role in human nutrition due to richness of nutrients, dietary fibre, and phytochemicals. As dietary intake is identified as one of the dominant exposure pathways to perfluoroalkyl substances (PFASs), a cross-sectional study involving determination of their levels in food of plant origin has been conducted.
Katarzyna Sznajder-Katarzyńska, Magdalena Surma, Ewa Cieślik, Wiesław Wiczkowski   +3 more
openaire   +2 more sources

Electrophotocatalysis for Reductive Defluorination of PTFE and PFASs

Angewandte Chemie
AbstractPolytetrafluoroethylene (PTFE) is among the most inert poly‐ and perfluoroalkyl substances (PFASs) and its degradation under mild conditions remains underdeveloped. We report a supercapacitor‐assisted electrophotocatalysis, incorporating the strength of both electrochemical and photochemical energy, for the efficient defluorination of PTFE and ...
Jia-Le, Fu, Yu, Liu, Yi-Ming, Chen, Hao, Zhang, Jian-Ping, Qu, Yan-Biao, Kang   +5 more
openaire   +2 more sources

Photocatalytic low-temperature defluorination of PFASs

Nature
Polyfluoroalkyl and perfluoroalkyl substances (PFASs) are found in many everyday consumer products, often because of their high thermal and chemical stabilities, as well as their hydrophobic and oleophobic properties1. However, the inert carbon-fluorine (C-F) bonds that give PFASs their properties also provide resistance to decomposition through ...
Hao Zhang, Jin-Xiang Chen, Jian-Ping Qu, Yan-Biao Kang   +3 more
openaire   +2 more sources

Seeking regulation of PFASs as a class

C&EN Global Enterprise, 2018
To address contamination of drinking water with per- and polyfluoroalkyl substances (PFASs) across the country, U.S. lawmakers are urging EPA to regulate the chemicals as a class rather than controlling each individually. EPA has a precedent for controlling drinking water contaminants as a class, Peter C.
openaire   +1 more source

Unveiling the Truth of Interactions between Microplastics and Per- and Polyfluoroalkyl Substances (PFASs) in Wastewater Treatment Plants: Microplastics as a Carrier of PFASs and Beyond

Environmental Science & Technology
Microplastics (MPs) and per- and polyfluoroalkyl substances (PFASs) are ubiquitous contaminants in environments, yet their co-occurrence and interactions remain insufficiently understood. In this study, we confirmed the concurrent presence of MPs and PFASs and their distinct distribution patterns in a wastewater treatment plant (WWTP) through a ...
Xin Song, Frédéric Coulon, Min Ma
exaly   +4 more sources