摘要
研究了在聚乙二醇2000(PEG) 硫酸铵 铝试剂双水相体系中,铝试剂作萃取剂,对镧、镨、镝的萃取行为。实验结果表明,在pH1～7酸度条件下,La(Ⅲ)完全被PEG相萃取,而Pr(Ⅲ)几乎不萃取,Dy(Ⅲ)部分被萃取。在pH5的缓冲溶液中实现了La(Ⅲ)与Pr(Ⅲ)的分离。通过加入表面活性剂,测定溶液光谱等方法,探讨了金属离子在聚乙二醇相中存在形态。
In polyethylene glycol 2000(PEG)ammonium sulfatealuminon twophase aqueous system, extraction behaviour of Lanthanum, praseodymium and dysprosium ions with aluminon as the extractant was investigated. Experimental results show that La(Ⅲ) was almost completely extracted in PEG phase while Pr(Ⅲ) was not extracted in pH 1～7 buffer solution. Extraction separation of La(Ⅲ) and Pr(Ⅲ) was carried out at pH 5.0. The existing form of metal ions in PEG phase was studied by means of absorption, changing molarratio and adding different furfactants.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2002年第z3期174-176,共3页
Journal of the Chinese Society of Rare Earths
基金
安徽省教育厅自然科学研究计划项目资助(2001kj195)
关键词
稀土
聚乙二醇
铝试剂
镧
镨
镝
分离
rare earths
polyethylene glycol
aluminon
lanthanum
praseodymium
dysprosium
separation
