K. Fujinaga et al., AN ATTEMPT TO DEVELOP THE HYBRID LIQUID-SOLID EXTRACTION METHOD - CENTRIFUGAL PHASE-SEPARATION USING POLY(N-ISOPROPYLACRYLAMIDE) AS AN ADSORBENT, Analytical sciences, 13, 1997, pp. 141-144
It was found that poly(N-isopropylacrylamide) could be used as a trans
ferring medium to effect the concentration of tris(1,10-phenanthroline
)iron(II) in homogeneous aqueous solution without using organic solven
ts at all. The optimum conditions, such as pH, poly(N-isopropylacrylam
ide) concentration, kind and concentration of counter anion, and the t
ime for centrifugal phase separation were examined.