[Study on extraction separation of Bi(III), Fe(III), Cu(II), Ni(II), Co(II) and Pb(II) in PEG-(NH4)2SO4-PR system using spectrophotometry].
In polyethylene PEG-(NH4)2SO4-PR system the extraction separation behaviour of the complexes of Bi(III), Fe(III), Cu(II), Ni(II), Co(II) and Pb(II) was investigated. The results indicated that Bi in pH 3.5-6.5 and Fe(III) in pH 4.0-7.0 were almost completely extracted by the PEG phase, while Cu(II) and Co(II) in pH 1.0-7.0, Pb(II) in pH 2.0-7.0, and Ni(II) in pH 1.0-4.5 were not extracted by the PEG phase. So Bi(III) (pH 3.5) and Fe(III) (pH 5.0) were quantitatively separated from the mixed solution of Bi(III), Fe(III), Cu(II), Co(II), Pb(II) and Ni(II) ions. The extraction mechanism for PEG phase was preliminarily studied.
Cai
Hong
H
Chemistry Department, Suzhou Teachers' College, Suzhou 234000, China.
Zhang
Chun-li
CL
Xu
Xiu-li
XL
Shi
Ying
Y
D000645:Ammonium Sulfate / Q000737:chemistry*; D001729:Bismuth / Q000032:analysis / Q000302:isolation & purification*; D003035:Cobalt / Q000032:analysis / Q000302:isolation & purification; D003300:Copper / Q000032:analysis / Q000302:isolation & purification; D007501:Iron / Q000032:analysis / Q000302:isolation & purification*; D007854:Lead / Q000032:analysis / Q000302:isolation & purification; D009532:Nickel / Q000032:analysis / Q000302:isolation & purification; D010637:Phenolsulfonphthalein / Q000737:chemistry; D011092:Polyethylene Glycols / Q000737:chemistry*; D013053:Spectrophotometry / Q000379:methods
D007854:Lead; D003035:Cobalt; D011092:Polyethylene Glycols; D003300:Copper; D009532:Nickel; D007501:Iron; D010637:Phenolsulfonphthalein; D000645:Ammonium Sulfate; D001729:Bismuth