Perfluoroalkyl Substances (PFASs) in the Canadian Freshwater Environment.

Arch Environ Contam Toxicol · 2022 · PMC9079020 · PMID 35347351

Europe PMC DOI

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an overall trendno p-value reported

3 a–f) reveal an overall trend with five of the six PFASs having the lowest concentrations measured at mixed sites and the highest at urban sites.

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a significant trendno p-value reported

Similarly, to Highland Creek the vast majority of samples from this site had detectable concentrations even for PFOS and PFOA although none of the PFSA had a significant trend to report.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.