Microwave irradiation technique was used to promote the extraction processes of bromide complex anions of Pt（Ⅱ） and Pd（Ⅱ） from aqueous biphase system of polyethyleneglyol/（NH4）2SO4. The results showed that under microwave irradiation the distribution ratio of metals, extraction capacity and extraction ratio increased significantly as compared with conventional extraction technique. Under microwave irradiation the extraction ratio of Pt or Pd achieved 100.0% and 99.6%, respectively. The non-isothermal kinetics on the extraction reaction also approved the enhanced extraction rate.
A new method for the separation of ion association complex of gold(Ⅲ) chloride rhodamine B by aqueous biphasic extraction system of n propyl alcohol (NH 4) 2SO 4 water was investigated.The experimental results indicate that the method can extract Au(Ⅲ) in hydrochloride medium.The extraction ratios of Au(Ⅲ) is 99.2%.The proposed method can separate Au from Fe,Al,Pb,Zn,Ca,et al base metals and was used for the separation of synthetic sample and the samples of anode slime and place gold.
