The gold and silver absorbed on the resin can be guantitatively eluted by the solution of N aCN N aOH and buffer solution of H 3BO 3 -NaOH with solution of Na 2 S 2O 3. The gold and silver have been separated.

• 负载金银的树脂可分别用NaCN－NaOH 溶液和Na2S2O3 的H3BO3－NaOH 缓冲溶液定量洗脱，达到了一定程度的金银分离