摘要
研究了 (NH4) 2 SO4存在下 ,KBr 乙醇体系萃取分离Au 的行为。实验表明 ,Br-与Au 形成的AuBr-4很容易被萃取到乙醇相中。当溶液中KBr、(NH4) 2 SO4和无水乙醇浓度分别为 0 .0 4g/mL、0 .30g/mL、30 % (V/V) ,pH =2～ 4时能使Au 的萃取率达到 10 0 % ,Al 、Ni 、Mn 、Cr 、Co 、Fe 、Zn 、Cu 、Mo 、U 基本不被萃取 ,实现了Au
A study on liquid-liquid extraction of Au based on KBr-ethanol in the presence of ammonium sulphate has been performed. It shows that the charged compound AuBr - 4 can be easily extracted into the ethanol phase. The extraction rate of Au reaches the 100% when the concentration of KBr, (NH 4) 2SO 4 and ethanol in system is 0 04 g/mL, 0.30 g/mL and 30%(V/V), respectively. Au can be separated completely from Al?Ni?Mn?Cr?Co?Fe?Zn?Cu?Mo and U at pH=2～4.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
2004年第1期56-59,共4页
Chinese Journal of Analytical Chemistry
关键词
硫酸铵
溴化钾
乙醇
萃取
化学分离
金
Gold, extraction separation, ethanol, potassium bromide, ammonium sulphate
