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Heat-activated persulfate treatment of 3M AFFF in aquifer sediment slurry. (a) PFSAs; (b) PFCAs. 83,000-fold dilution of AFFF, [S2O82–]0 = 50 mM, pH0 = 3.5, T = 85 °C. A second persulfate aliquot of 50 mM was added after 7.5 hours. Bars represent the mean of triplicate measurements. Solid lines with circles represent the sum of PFSAs or PFCAs in persulfate-free controls (n = 1).
