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What is the effect of phasing out long-chain per- and polyfluoroalkyl substances on the concentrations of perfluoroalkyl acids and their precursors in the environment? A systematic review protocol

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Figure

Figure 1 Timeline of production, commercialization and legislation of PFCAs. APFO (ammonium perfluorooctanoate) and NaPFO (sodiumperfluorooctanoate) are salts of PFOA
Figure 2 Timeline of production, commercialization and legislation of PFSAs. POSF (perfluorooctane sulfonyl fluoride) is the major rawmaterial used to manufacture PFOS
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