Experimental Parameters N1 N2 K’1 K’2 α
pH 3 1115 991 2.1 0.45 4.7
3.5 1775 1100 2.5 0.41 6.1
4 1994 1172 2.21 0.5 4.42
4.5 1226 1180 2.6 0.51 5.2
5 2259 1215 2.44 0.51 5.1
5.5 2366 1246 2.55 0.52 4.7
6 2444 1250 2.44 0.52 4.7
6.5 1354 1190 2.15 0.51 4.2
7 1268 1115 1.5 0.51 3.1
SDS conc.
(Mole/L)
0.05 1443 1240 3.5 0.9 3.11
0.08 2366 1246 2.55 0.52 4.7
0.1 2444 1250 2.2 0.42 5.2
0.12 1665 1120 1.8 0.38 4.7
0.15 1323 1028 1.5 0.3 5
Type of co –Surfactant. Methanol 1804 1185 2.33 0.48 4.9
Ethanol 1999 1230 2.35 0.5 4.7
n-Propanol 2366 1246 2.55 0.52 4.7
n-Butanol 1745 1200 2.41 0.52 4.6
Conc. of propanol 6% 2106 1233 2.8 0.8 3.2
8% 2366 1246 2.55 0.52 4.7
10% 2444 2250 2.3 0.4 5.75
12% 2038 1170 1.86 0.35 5.3
15% 1462 1030 1.6 0.3 5.33
  Flow rate
(ml/min)  
0.5 2138 980 5.74 2 2.8
0.8 2285 1190 4.1 1.5 2.73
1 2444 1250 2.55 0.52 4.7
1.2 1816 1200 2 0.35 5.71
1.5 1998 1140 1.56 0.23 6.8
N1, N2 :The number of theoretical plates of cinnamic acid and idrocilamide
K’1, K’2: The capacity factors of cinnamic acid and idrocilamide
α: The selectivity factor
Table 1: Effect of different experimental parameters on the column efficiency for the separation of idrocilamide and its degradation product