pharmaceuticals

Cdet ± µ mg/L

Recovery, %

RSD intra-day %

RSD inter-days %

System I

  Diphergan

10.04 ± 0.05

100.4

0.52

1.42

20.07 ± 0.32

100.3

1.28

1.32

29.98 ± 0.13

99.93

0.72

0.95

Thioridazin

10.02 ± 0.13

100.2

1.15

1.11

19.95 ± 0.10

99.75

0.67

0.83

29.93 ± 0.12

99.77

0.34

0.56

Fenactil

9.91 ± 0.05

99.10

0.74

0.98

19.89 ± 0.08

99.45

0.69

0.57

29.94 ± 0.14

99.80

0.53

0.43

System II

Diphergan

10.12 ± 0.08

101.2

0.58

0.68

20.07 ± 0.09

100.3

0.51

0.49

30.02 ± 0.16

100.1

0.49

0.75

Thioridazin

10.13 ± 0.07

101.3

0.67

0.92

20.17 ± 0.07

100.8

0.38

0.67

30.20 ± 0.10

100.7

0.34

0.36

Fenactil

10.10 ± 0.05

101.0

0.52

0.46

20.16 ± 0.08

100.8

0.73

0.95

30.22 ± 0.07

100.7

0.46

0.42

System III

Diphergan

9.87 ± 0.07

98.70

0.68

0.79

19.68 ± 0.13

98.40

0.70

0.82

29.58 ± 0.13

98.60

0.46

0.44

Thioridazin

9.85 ± 0.10

98.50

0.98

0.92

19.66 ± 0.15

98.30

0.87

0.32

29.60 ± 0.10

98.67

0.72

0.61

Fenactil

9.65 ± 0.20

96.50

1.56

1.24

19.56 ± 0.22

97.80

0.94

1.04

29.65 ± 0.32

98.83

0.94

0.99

Where: - Confidence limit, p=95%; RSD - relative standard deviation.
Table 3: Determination of active substances in pharmaceuticals.