摘要
本文研究了聚乙二醇（ＰＥＧ）－（ＮＨ４）２ＳＯ４－铬黑Ｔ（ＥＢＴ）体系对Ｆｅ（Ⅲ）、Ｃｏ（Ⅱ）、Ｎｉ（Ⅱ）、Ｃｕ（Ⅱ）、Ｃｄ（Ⅱ）的非有机溶剂萃取行为。结果表明，在ｐＨ７￣１１的ＮＨ３·ＨＮＨＣｌ缓冲溶液中，Ｆｅ（Ⅲ）、Ｃｏ（Ⅱ）、Ｎｉ（Ⅱ）、Ｃｕ（Ⅱ）可被聚乙二醇（ＰＥＧ）相萃取，而Ｃｄ（Ⅱ）基本上不被萃取，从而获得了Ｃｄ（Ⅱ）与Ｆｅ（Ⅲ）、Ｃｏ（Ⅱ）、Ｎｉ（Ⅱ）、Ｃｕ（Ⅱ）混合离子的定量分离。
In polyethylene glycol (PEG)-ammonium sulfate-Eriochrome Black T(EBT) system, the extraction behaviour of the complexes of Fe( Ⅲ ),Co( Ⅱ ),Ni( Ⅱ ),Cu( Ⅱ ) and Cd ( Ⅱ ) was investigated. The results indicated that complexes of Fe( Ⅲ ), Co( Ⅱ ), Ni( Ⅱ ) and Cu( Ⅱ ) with EBT were almost extracted by PEG phase while Cd( Ⅱ ) was not extracted in the water solutions of NH3 · H2O-NH4Cl(pH7-11). So that Cd( Ⅱ ) was quantitatively separated from mixed solutions of Cd( Ⅱ ), Fe( Ⅲ ), Co( Ⅱ ), Ni( Ⅱ ) and Cu( Ⅱ ) ions.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1995年第7期832-834,共3页
Chinese Journal of Analytical Chemistry
关键词
铬黑T
萃取
聚乙二醇
铁
钴
镍
铜
镉
Eriochrome black T
extraction
polyethylene glycol
