摘要
研究了Tween 80水溶液在(NH_4)_2SO_4存在下,水溶性螯合剂1-(2吡-啶偶氮)-2-萘酚-磺酸与金属离子螯合物在该体系中两相间的分配行为.结果表明,Pd(Ⅱ)、Co(Ⅱ)在pH2.0～3.5缓冲溶液中可被Tween相完全萃取,而Zn(Ⅱ)、Cd(Ⅱ)、Mn(Ⅱ)、Al(Ⅲ)基本上不被萃取.在不同pH条件下实现了Pd(Ⅱ)、Co(Ⅱ)、Ni(Ⅱ)、Zn(Ⅱ)、Cd(Ⅱ)、Mn(Ⅱ)、AI(Ⅲ)混合离子的定量萃取分离.
In Tween 80-ammonium sulfate-1-(2-pyridylazo)-2-naphthol-sulfonic acid (PAN-S) system,the liquid-solid extraction behaviour of the Pd(Ⅱ), Co(Ⅱ), Ni(Ⅱ), Zn(Ⅱ), Cd(Ⅱ), Mn(Ⅱ) andAl(Ⅲ) were investigated. The results indicated that complexes of Pd(Ⅱ) and Co(Ⅱ) with PAN-S werealmost completely extracted in buffer solution (pH 2.0-3.5) by Tween 80 phase while Zn(Ⅱ), Cd(Ⅱ), Mn (Ⅱ),Al (Ⅲ) were not. Effect of surfactants on extraction behaviour was studied.Quantitative separation of Pd(Ⅱ) and Co(Ⅱ) , Ni(Ⅱ) from mixed ions of Zn(Ⅱ), Cd(Ⅱ), Mn(Ⅱ), Al(Ⅲ) in different pH buffer solution were realized.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1999年第8期920-923,共4页
Chinese Journal of Analytical Chemistry
基金
浙江省分析测试基金资助项目
关键词
萃取
分离
钯
钴
镍
锌
镉
锰
铝
Tween80
Liquid-solid extraction
separation
palladium
cobalt
nickel
zinc
cadmium
manganese
aluminum
l-(2-pyridylazo)-2-naphthol-sulfonic acid
