摘要
研究了硫酸铵-碘化钾-溴化十六烷基吡啶-水液-固体系浮选分离汞(Ⅱ)的行为及其与常见离子分离的条件。结果表明,在1.0g(NH4)2SO4存在下,当0.1mol/L碘化钾和0.001mol/L溴化十六烷基吡啶(CPB)溶液的用量分别为1.5、1.0mL时,KI-CPB-Hg三元缔合物可浮于盐水相上形成界面清晰的两相,从而使Hg2+被定量浮选,而Zn2+、Mn2+、Ni2+、Co2+、Fe2+、Al3+等离子不被浮选,实现了Hg2+与这些离子的定量分离。方法对合成水样中微量汞(Ⅱ)进行的定量浮选分离测定,结果满意。
The liquid-solid floatation separation behaviours of mercury（ Ⅱ ） by the system of ammonium sulfate-potassium iodide-cetyl pyridinium bromide-water and conditions for the separation of mercury （ Ⅱ ） from other metal ions were studied. The results showed that with the amount of 1.5mL of 0. lmol/L KI solution and 1.0mL of 1.0 × 10^-3mol/L cetyl pyridinium bromide（CPB） solution,the ternary association complex of KI-CPB-Hg floated above the salt-water and formed two phases with clear interface in the presence of 1.0g（NH4）2SO4. In this condition Zn^2＋ ,Mn^2＋ ,Ni^2＋ ,Co^2＋ ,Fe^2＋ ,Al^3＋ could not be floated and Hg^2＋ could be floated quantitatively. The method has been used for the floatation separation of Hg^2＋ in synthetic water sample and the results were satisfactory.
出处
《化学试剂》
CAS
CSCD
北大核心
2005年第8期479-481,共3页
Chemical Reagents
关键词
汞(Ⅱ)
液-固浮选分离
碘化钾
溴化十六烷基吡啶
mercury （ Ⅱ ）
liquid-solid floatation separation
potassium iodide
cetyl pyridinium bromide
