Journal of Analytical Methods in Chemistry / 2023 / Article / Tab 4 / Research Article
Simultaneous Preconcentration of Fast Green FCF and Rhodamine B Using Deep Eutectic Solvent and Determination via High-Performance Thin Layer Chromatography Table 4 Analysis of variance results for simultaneous preconcentration of fast green FCF and rhodamine B.
Source Sum of squares D.F1 Mean square F valuep value Fast green FCF Model 8.629E + 006 14 6.164E + 005 956.71 <0.0001 Significant A (pH) 8719.19 1 8719.19 13.53 0.0022 B (volume of deep eutectic solvent) 1.78E + 05 1 1.78E + 05 276.54 <0.0001 C (concentration of salt) 6.37E + 05 1 6.37E + 05 988.59 <0.0001 D (stirrer time) 21090.05 1 21090.05 32.73 <0.0001 AB 96744.33 1 96744.33 150.16 <0.0001 AC 196.35 1 196.35 0.3 0.589 AD 20653.28 1 20653.28 32.06 <0.0001 BC 5.70E + 05 1 5.70E + 05 885.37 <0.0001 BD 21035.88 1 21035.88 32.65 <0.0001 CD 899.25 1 899.25 1.4 0.2558 A2 2.77E + 06 1 2.77E + 06 4303.69 <0.0001 B2 1.68E + 06 1 1.68E + 06 2601.86 <0.0001 C2 6.36E + 05 1 6.36E + 05 986.39 <0.0001 D2 4.41E + 06 1 4.41E + 06 6844.58 <0.0001 Residual 9664.09 15 644.27 Lack of fit 8347.39 10 834.74 3.17 0.1074 Not significant Pure error 1316.7 5 263.34 Total 8.64E + 06 29 Rhodamine B Model 8.455E + 006 14 6.039E + 005 455.35 <0.0001 Significant A (pH) 1.107E + 005 1 1.107E + 005 83.47 <0.0001 B (volume of deep eutectic solvent) 1.10E + 05 1 1.10E + 05 82.8 <0.0001 C (concentration of salt) 9.64E + 05 1 9.64E + 05 727.06 <0.0001 D (stirrer time) 68.01 1 68.01 0.051 0.8239 AB 1.70E + 05 1 1.70E + 05 128.07 <0.0001 AC 98863.08 1 98863.08 74.54 <0.0001 AD 1434.52 1 1434.52 1.08 0.3148 BC 3.77E + 05 1 3.77E + 05 284.38 <0.0001 BD 5.29E + 05 1 5.29E + 05 398.98 <0.0001 CD 1.77E + 05 1 1.77E + 05 133.09 <0.0001 A2 2.06E + 05 1 2.06E + 05 155.14 <0.0001 B2 2.79E + 06 1 2.79E + 06 2103.05 <0.0001 C2 1.16E + 05 1 1.16E + 05 87.35 <0.0001 D2 3.25E + 06 1 3.25E + 06 2447.51 <0.0001 Residual 19893.5 15 1326.23 Lack of fit 11130.83 10 1113.08 0.64 0.7472 Not significant Pure error 8762.67 5 1752.53 Total 8.47E + 06 29
1 Degree of freedom.