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Heat-activated persulfate treatment of 3M AFFF in water. (a) PFSAs; (b) PFCAs. 83 000-fold dilution of AFFF, [S2O82–]0 = 50 mM, pH0 = 3.5, T = 85 °C. Bars represent the mean of triplicate measurements. Solid lines with circles represent the sum of PFSAs or PFCAs in persulfate-free controls (n = 1).
