I. Villaescusa et al., SOLID-LIQUID EXTRACTION OF AU(III) FROM AQUEOUS CHLORIDE SOLUTIONS BYTRI-N-DODECYLAMMONIUM CHLORIDE IMPREGNATED IN AMBERLITE XAD-2 RESIN, Reactive & functional polymers, 32(2), 1997, pp. 125-130
The extraction of Au(III) from 1.0 mol dm(-3) HCl solutions with the e
xtractant tri-n-dodecylammonium chloride (TLAHCl) impregnated in a pol
ymeric resin XAD-2 has been studied. The results of gold extraction sh
owed that AuCl(3)TLAHCl and AuCl3(TLAHCl)(2) were the extracted specie
s in the resin. There was no loss of extraction resin capacity when th
iourea solutions were used as stripping agent. It was also found that
the system TLAHCl/XAD-2 can be used to extract selectively gold from s
olutions containing zinc and copper.