Thereby, the effect of GC+ concentration on analytical signal intensity of Sn(IV) was studied in range of (0.0– 0.25) 103 mol L1 and the results are shown in Fig. 2(a).
It can be seen that the signal intensity of Sn(IV) dramatically depends on the concentration of GC+ in CPE system.
With the increase in concentration of GC+, the signal intensity increased in initial and
the maximum signal intensity was achieved in 1.5 104 mol L1.
Therefore, a concentration of 1.5 104 mol L1 was selected as optimal value for the subsequent studies.
The variation of the analytical signal as a function of the concentration of glycine in the range of (0.0–0.1) 103 mol L1 in order to generate a hydrophobic stable ternary complex was studied, and the results in Fig. 2(b) demonstrates that the signal intensity of the analyte linearly increased by increasing glycine concentration up to
1.5 105 mol L1.
The maximum signal intensity decreased at the higher concentrations than 1.5 105 mol L1.
So, a glycine concentration of 1.5 105 mol L1 was selected as optimal value for the subsequent studies.