摘要
研究了硫酸铵-硫氰酸铵-甲基紫液-固体系浮选分离汞(Ⅱ)的行为及其与常见离子分离的条件。实验结果表明,在1.0g(NH4)2SO4存在下,当0.01mol/L硫氰酸铵和0.001mol/L甲基紫(MV)溶液的用量分别为0.5ml、0.6ml时,NH4SCN-MV-Hg三元缔合物可浮于盐水相上形成界面清晰的液-固两相,从而使Hg2+被定量浮选,而Zn2+、Cd2+、Cu2+、Mn2+、Ni2+、Fe2+、Al3+等离子不被浮选,实现了Hg2+与这些离子的定量分离。该方法对合成水样中微量汞(Ⅱ)进行的定量浮选分离测定,结果令人满意。
The liquid-solid flotation separation behaviors of mercury （ Ⅱ ） by the system of ammonium sulfate-ammonium thiocyanate-methyl violet-water and conditions for the separation of mercury （ Ⅱ ） from other metal ions were studied. The results show that with the amount of 0.5ml of the solution of 0.01mol/L NH4SCN and 0.6ml of the solution of 1.0 × 10^-3 mol/L MV,the ternary association complex of NH4SCN- MV - Hg floated above the salt-water and formed two phase with clear interface in the presence of 1.0g （NH4） 2SO4. In this condition Zn^2＋ , Cd^2＋ , Cu^2＋, Mn^2＋, Ni^2＋, Fe^2＋, Al^3＋ could not be floated and Hg^2＋ could be floated quantitatively. The method has been used for the flotation separation of Hg^2＋ in the sample of synthetic water and the results were satisfactory.
出处
《黄金》
CAS
北大核心
2005年第10期37-39,共3页
Gold
关键词
汞(Ⅱ)
液-固浮选分离
硫氰酸铵
甲基紫
mercury （ Ⅱ ）
liquid-solid flotation separation
ammonium thiocyanate
methyl violet
