357807.fig.001
Figure 1: The response graph illustrating the variation of the mean area peak values plotted against various extraction parameters. pH (level 1 = 3.0, level 2 = 4.0, level 3 = 5.0, level 4 = 6.0). Surfactant (%) (level 1 = 0.05, level 2 = 0.1, level 3 = 0.2, level 4 = 0.3). Ionic strength (mol L−1) (level 1 = 0.01, level 2 = 0.1, level 3 = 0.25, level 4 = 0.5). Temperature (°C) (level 1 = 30, level 2 = 40, level 3 = 50, level 4=60). Acetone volume (μL) (level 1 = 50, level 2 = 75, level 3 = 100, level 4 = 125).