十六烷基三甲基溴化铵/磷酸三丁酯萃取金

Solvent Extraction of Aurocyanide by Extractant CTMAB and TBP

摘要: 研究了以 30 %TBP 十二烷为有机相、Au(CN) - 2 十六烷基三甲基溴化铵 (CTMAB)为水相的萃取体系, 利用198Au示踪方法对萃取行为进行了研究, 并对有机相的溶液结构进行了红外光谱表征。研究结果表明 :有机相金浓度达到 2 0g/L时分成双相, 金主要存在于下层有机相中。

Abstract: A novel extraction system using KAu(CN) 2 CTMAB as aqueous phase and 30 % TBP dodecane as organic phase is studied by 198 Au radioactive tracer and FT IR spectroscopy. The results show that the organic phase separates into two phases, when the gold concentration is bigger than 20 g/L. From the analysis of FT IR it is seen that the most of gold is in the lower organic phase.