Effect of DDTC concentration
The CPE efficiency depends on the hydrophobicity of
the ligand and the complex formation, the apparent
equilibrium constants in the micelle medium, the kinetics
of the complex formation, and the mass transference
between the phases. The variation of the analytical signal
as a function of the DDTC concentration in the range of
0.2-2.0% (w/v) was studied, and the experimental result
was demonstrated in Fig.2. It could be seen that the
analytical signal of copper(II) nearly kept constant when
DDTC concentration within 0.5-2.0% range. For further
studies, DDTC concentration of 1.0 %(w/v) was chosen.