The permeation behavior of palladium(II) through a supported liquid me
mbrane (SLM) impregnated with trioctylamine (TOA) in kerosene has been
investigated. By selecting perchloric or nitric acid as a stripping a
gent, Pd(II) was transported through the SLM containing 0.5 M TOA and
20% 1-octanol without remaining in the liquid membrane. The permeation
rate (k(f,obs)) of Pd(II) for HNO3 was faster than that for HClO4. Pa
lladium(II) was concentrated across the SLM from the 0.5 M HCl solutio
n into the HClO4 or HNO3 solution.