The diffusivity of Cu2+ in calcium alginate beads calculated by the sh
rinking core model (SCM) was reevaluated in this work. The results obt
ained in this work were significantly different than those by the orig
inal authors. There were excellent agreements between the results obta
ined by the SCM in this work and those by the more rigorous linear abs
orption model (LAM) by the original authors. (C) 1994 John Wiley & Son
s, Inc.