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加拿大研究了用选择性萃取并迁移过醚型聚氨酯薄膜分离Au(Ⅲ).发现Au在HCl和HBr强酸溶液中,以HAuBr_4和HAuCl_4络合物萃入薄膜.一旦被萃取,HAuCl_4和HAuBr_4络合物扩散过薄膜并在接受槽溶液中定量回收.为了分离各种二元金属溶液,以及从金矿石溶液中分离金,研究了此现象.调节起始槽和接受槽溶液的体积,也达到了金的预富集.
Canada studied the selective extraction and migration of Au (III) through an ether-based polyurethane film and found that Au was extracted into HAuBr_4 and HAuCl_4 complexes in a strong acid solution of HCl and HBr. Once extracted, HAuCl_4 and HAuBr_4 complexes The material diffused through the film and was quantitatively recovered in a receiving bath solution.This phenomenon was studied in order to separate various binary metal solutions and to separate gold from the gold ore solution.The volume of the starting and receiving bath solutions was also reached Pre-enrichment of gold.