where ½Abead and ½Aaq is the solute concentration in the microbead
and the aqueous phase respectively, and Mbead and Maq is the mass
of solute in the microbead and aqueous phase, respectively. Vbead
and Vaq is the volume of the microbead and aqueous solution
respectively. K is obtained from the slope of the plot of Mbead/Maq
against Vbead/Vaq.