以盐酸和SmCl3溶液作为洗液,对负载Sm3+和Zn2+的有机相进行洗涤,分别研究了添加和未添加NH4Cl的洗液对负载有机相中Zn2洗涤率的影响.结果表明,在相比O/A为2:1时,用1.5 mol/L盐酸添加3 mol/L NH4Cl洗液,可以将Zn2+完全洗涤,而未添加NH4Cl的洗液酸度大于等于2 mol/L时,才能将Zn2完全洗涤;以0.5 mol/L SmCl3溶液添加NH4Cl作为洗液,Zn2完全被洗涤,未添加NH4Cl的SmCl3洗液,Zn2+洗涤率为92.35%.
The organic phase loading Sm3+ and Zn2+ was washed by hydrochloric acid and SmCl3 solution in the experiment.The washing with and without NH4Cl had an influence on the washing rate of Zn2 + in the loaded organic phase.The results show that Zn2+ can be completely washed with 1.5 mol/L HCl adding 3 mol/L NH4Cl or with ≥2 mol/L HCl and without NH4Cl.Zn2+ can also be completely washed with 0.5 mol/L SmCl3 solution adding NH4Cl,but the washing rate was 92.35% with 0.5 mol/L SmCl3 solution without NH4Cl.
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