Perfluoroalkyl Substances (PFASs) in the Canadian Freshwater Environment View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2022-03-26

AUTHORS

Benoit Lalonde, Christine Garron

ABSTRACT

Per- and polyfluoroalkyl substances (PFASs) are anthropogenic substances that are very stable in the receiving environment. Legacy perfluoroalkane sulfonates (PFSAs) and perfluoroalkyl carboxylic acids (PFCAs) are especially persistent and resistant to typical environmental degradation processes and therefore are distributed across all trophic levels and environmental compartments (soil, air, water). Since most uses of perfluorooctane sulfonate (PFOS), perfluorooctanoic acid (PFOA), and LC-long-chain PFCAs are banned in Canada, alternative PFASs have been in use for a number of years. Twenty-nine sites across Canada were sampled for PFASs to determine concentrations and trends. Overall, 13 PFASs were measured in 566 Canadian freshwater samples from 2013 to 2020 with a range from below the detection limit (LOD range: 0.4–1.6 ng/L) of the laboratory to a maximum of 138 ng/L (for PFBS). While PFOS and PFOA concentrations are declining significantly over time, other compounds such as PFPeA and PFBA have increased significantly over 2013–2020. Overall, the range of concentrations found in this study was similar to that of other Canadian and international studies. However, this study also found a higher frequency of detections of the replacement PFASs than that of the other, older, Canadian studies. More... »

PAGES

581-591

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00244-022-00922-x

DOI

http://dx.doi.org/10.1007/s00244-022-00922-x

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1146623732

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/35347351


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