Partition of Gold (I) Cyanide in Polyethylene Glycol Based Aqueous Biphasic Systems

The partition of gold (Ⅰ) cyanide in aqueous biphasic systems (PEG/Na 2SO 4) has been investigated.Almost all of gold (Ⅰ) was in the rich PEG phase.The aqueous biphasic systems have high capability of extraction.The electrical conductivity of rich PEG phase decreases with the increase of gold (Ⅰ) concentration.FT Raman spectra show that there is no strong interaction between PEG and gold (Ⅰ) cyanide.