SSSAJ -- Kim et al. 63 (6): 1554 Figure IG7

Fig. 7 The ratio of interfacial velocity to the bulk pore-water velocity ( ${alpha}$ ), based on the observed sodium dodecylbenzene sulfonate (SDBS) retardation factors (Kim et al., 1997) and the estimated hypothetical retardation factors of SDBS based on the air–water interfacial areas (a_i) measured by gaseous interfacial tracer (n-decane) experiments