CO(Ⅱ)、NI(Ⅱ)非有机溶剂液液萃取行为的研究

• 机 构: 淮北煤炭师范学院化学系
• 出 处: 光谱学与光谱分析
• 发表日期: 1998年3期
• 关键词: EXTRACTION POLYETHYLENE GLYCOL ERIOCHROME CYANINE R

该文研究了PEG2000铬菁R(NH4)2SO4体系对CO(Ⅱ)、NI(Ⅱ)的非有机溶剂萃取行为.指出在PH＝5的(NAACHAC)水溶液中,有(NH4)2SO4存在下,NI(Ⅱ)可被PEG相几乎完全萃取,而CO(Ⅱ)则基本上不被萃取.从而获得了CO(Ⅱ)与NI(Ⅱ)混合离子的定量分离.“,”In PEG?Eriochrome cyanine R?(NH?4)?2SO?4 system the liquid?liquid extraction behaviour of Co(Ⅱ) and Ni(Ⅱ) without organic solvents was investigated.We found that Ni(Ⅱ) was almost extracted by PEG phase while Co(Ⅱ) was not extracted in the water solutions of NaAc?HAc(pH=5) and (NH?4)?2SO?4.Thus Co(Ⅱ) was quantitatively separated from mixed solutions of Ni(Ⅱ) and Co(Ⅱ) ions.??