The extraction behaviors of Rodamin B-ethyl alcohol system on gold and the conditions for separation of gold from other metal ions were studied.It was found that ethyl alcohol-water solution could be separated into two phases of ethyl alcohol and water with the effect of ammonium sulfate.During the phase separation process,the complex[AuCl4-][RhB+]formed with AuCl4-and Rodamin B(RhB)could be completely extracted by ethyl alcohol.In the solution containing 0.2mg/mL Rodamin B,0.3g/mL ammonium sulfate and 30%(...