J. Ishikawa et al., HIGHLY SILVER ION-SELECTIVE TRANSPORT THROUGH LIQUID MEMBRANES CONTAINING CYCLIC AND ACYCLIC POLYTHIAMONOAZAALKANES BEARING AN EASILY IONIZABLE MOIETY, Analyst, 122(11), 1997, pp. 1383-1386
Liquid membranes containing cyclic and acyclic tetrathiazaalkanes bear
ing a hydrazone moiety as a proton-dissociable group exhibited effecti
ve uphill silver ion transport behavior in the proton-driven cation tr
ansport. Excellent silver ion selectivities relative to other class ab
and class ir metal ions were observed for these membranes when citric
acid was used for adjusting pH and for preventing hydrolysis of sever
al metal ions in the source phase, Complete recovery of silver ion fro
m a silver solder sample was selectively achieved using the liquid mem
brane containing acyclic tetrathiazaalkane hydrazone.