摘要
研究了罗丹明B-乙醇体系析相萃取金的行为及金与一些金属离子分离的条件。结果表明,乙醇水溶液在硫酸铵的作用下可分为水-乙醇两相,在此过程中,乙醇相能完全萃取罗丹明B(RhB)和AuCl4-生成的缔合物[AuCl4-][RhB+]。当溶液中罗丹明B、硫酸铵的质量浓度分别为0.2mg/mL、0.3g/mL,乙醇的体积分数为30%(V/V)时,AuCl4-的萃取率达到98.3%以上,而试液中Ni 2+、Sn4+、Mg2+、Fe3+、Cr3+、Al 3+、Ru3+、Pb2+、Ti 4+、Co2+和Ag+基本不被萃取,实现了Au3+与上述金属离子的分离。
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%(V/V)ethyl alcohol,the extraction rate of AuCl4-could reach above 98.3 %,while Ni 2+,Sn4+,Mg2+,Fe3+,Cr3+,Al 3+,Ru3+,Pb2+,Ti 4+,Co2+and Ag+was basically not extracted.Thus,Au3+was separated from the above metal ions.
出处
《冶金分析》
CAS
CSCD
北大核心
2014年第9期77-80,共4页
Metallurgical Analysis
基金
河南省教育厅自然科学研究计划项目(2006150023)
关键词
金
罗丹明B
乙醇
硫酸铵
萃取分离
gold
Rodamine B
alcohol
ammonium sulfate
extraction sep aration
