(a, b) Concentration
of doxorubicin at a given time, [D], normalized by
the initial concentration of doxorubicin, [D0] = 0.05 mg mL–1, as a function
of capture time. Open diamonds in (a) represent Nafion. Solid squares
in (a) and (b) represent S-SESA. Red circles and blue triangles in
(b) represent S-SESB and S-SESC, respectively. (c) Time at 90% doxorubicin
capture (solid data points) and SO3– concentration
(open data points) as a function of ϕv. Squares represent
S-SES membranes. Diamonds represent Nafion. (d) [D]/[D0] as a function of capture time
for S-SESB (circles) and Dowex ion-exchange resin (stars).