Parameters

SD of peak area

%RSD

Mobile phase composition

 

 

Actone-Water-Acetic acid  4:2:0.2 (v/v)

97.31

0.83

Actone-Water-Acetic acid  3.5:2.5:0.2 (v/v)

83.99

0.73

Mobile phase volume

 

 

6.02 mL

125.17

1.07

10.02 mL

80.51

0.70

Development distance

 

 

7 cm

121.23

1.06

7.5 cm

123.47

1.08

8 cm

108.25

0.94

Relative humidity

 

 

 55

146.17

1.25

 65

221.43

1.93

Duration of saturation

 

 

25  min

206.90

1.79

30 min

48.94

0.43

35 min

105.57

0.93

Activation of prewashed TLC plates

8  min

60.21

0.52

10 min

68.23

0.59

12 min

111.32

0.95

Time from spotting to chromatography

89.52

0.77

Time from chromatography to scanning

73.98

0.64

*mean of six determinations
Table 3: Robustness of the method*.