Fig. 5. Breakthrough curves of (a) MS-2 and (b) 
X174 from water-washed sand (WWS)–packed columns in phosphate-buffered saline (PBS) solution containing different concentrations of dissolved humic acid (HA).
Fig. 5. Breakthrough curves of (a) MS-2 and (b) X174 from water-washed sand (WWS)–packed columns in phosphate-buffered saline (PBS) solution containing different concentrations of dissolved humic acid (HA).