Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Measured and simulated transport of PFOA in unsaturated sand (Sw = 0.64; input concentration = ~7 μg/L). Measured data from Li et al., 2021. Simulation produced with the model of Brusseau (2020). AWIA was measured using the methods discussed in the main text. (A) 1.5 mM NaCl solution; (B) 30 mM CaCl2 solution.
