With constant pH of 3 at room temperature
(25±2 o
C). The (0.25–1.5) mL of 1 gm/L metal
ion (Zn(II) and Cu(II)) solutions were added and
the system was shaken for 30 minute followed by
15 minute of Centrifugation. Equal volumes (1
ml) for each phase were separated and measured
for Zn(II) and Cu(II) ions by means of atomic
absorption spectrometer (Type PERKIN –
ELMER 5000 in Ibn-Sina State Company,
Baghdad). Figure (4) show the experimental
procedure steps.