Release kinetics of selected PFAS: (a) PFBA, (b) PFBS, (c) PFHxA,
(d) PFHxS, (e) PFOA, and (f) PFOS. The data are presented as the fraction
of remaining PFAS (q
t
/q
0) over time. Each plot includes results
from three elution conditions: water, 10 mM NaCl, and 5 mM CaCl2.