After adsorption equilibrium was reached, the
adsorbate was desorbed for 8h in shaker at 25°C using
lOml of 50%, 70% and 90% aqueous ethanol solutions,
respectively. And the desorption recovery was
90.2%, 99.8% and 99.6% (n=3), respectively. It is
indicated that 70% ethanol is a better eluting phase.