碘化钾-十六烷基三甲基溴化铵体系浮选分离金(Ⅲ)

Floatation of Gold(Ⅲ) in Solution System of Potassium Iodide and CTMAB

摘要: 研究了硫酸铵存在下,碘化钾-十六烷基三甲基溴化铵体系浮选分离Au(Ⅲ)的行为,及其与一些金属离子分离的条件,用火焰原子吸收光谱法测定.当溶液中硫酸铵、碘化钾、十六烷基三甲基溴化铵分别为100 g·L-1,5.0×10-3mol·L-1,2.0×10-3mol·L-1,pH 3.0时,Au(Ⅲ)可与 Fe (Ⅱ)、Ni (Ⅱ)、Cu(Ⅱ) 、Cr(Ⅲ)、Zn(Ⅱ)、Cd(Ⅱ)定量分离,运用此法对合成水样中Au(Ⅲ)进行了定量分离测定.

Abstract: Floation of gold(Ⅲ) in solution system of potassium iodide and cetyl trimethyl ammonium bromide in the presence of ammonium sulfate,and the analytical conditions for its separation from some metal ions were studied.Data of the experiments were obtained by the flame atomic absorption spectrometry.It was found that in a solution of pH 3,and the concentrations of (NH4)2SO4,KI and CTMAB in the solution were 100 g·L-1 ,5.0×10-3mol·L-1 and 2.0×10-3mol·L-1,gold(Ⅲ) was quantitatively separated from Fe(Ⅱ),Ni(Ⅱ),Cu(Ⅱ),Cr(Ⅲ),Zn(Ⅱ) and Cd(Ⅱ).The proposed method has been applied to the determination of gold in simulated water samples.