Table 4 Application of the proposed method for the determination of the drugs in dosage forms.

From: Sulfur and nitrogen co-doped carbon quantum dots as fluorescent probes for the determination of some pharmaceutically-important nitro compounds

Parameter

Proposed method

Comparison method65

Conc.taken (μM)

Conc.found (μM)

% recoverya

% recoverya

RFP

 REP capsules (300 mg/capsule)

5.0

5.09

101.91

101.19

10.0

9.89

98.87

97.9

15.0

14.90

99.36

97.8

 Mean

 

100.05

98.96

 ± SD

 

1.63

1.93

 % RSD

 

1.628

1.949

 Student t-test

0.74 (2.77)b

 Variance ratio F-value

1.39 (19.0)b

Parameter

Proposed method

Comparison method14

Conc.taken (μM)

Conc.found (μM)

% recoverya

% recoverya

TNZ

 Protozole® coated tablets (TNZ, 500 mg/tablet)

50.0

49.57

99.14

97.7

100.0

101.67

101.67

97.39

150.0

147.71

98.47

95.19

 Mean

 

99.76

96.76

 ± SD

 

1.69

1.37

 % RSD

 

1.691

1.412

 Student t-test

2.39 (2.77)b

 Variance ratio F-value

1.52 (19.0)b

Parameter

Proposed method

Comparison method13

Conc.taken (μM)

Conc.found (μM)

% recoverya

% recoverya

ONZ

 Astranida® coated tablets (ONZ, 500 mg/tablet)

25.0

24.66

98.64

98.9

50.0

48.64

97.80

101.14

75.0

76.02

101.36

102.08

 Mean

 

99.27

100.71

 ± SD

 

1.86

1.63

 % RSD

 

1.875

1.623

 Student t-test

1.01 (2.78)b

 Variance ratio F-value

1.29 (19.0)b

Parameter

Proposed method

Comparison method12

Conc.taken (μM)

Conc.found (μM)

% recoverya

% recoverya

MNZ

 Flagyl® coated tablets (MNZ, 500 mg/tablet)

10.0

9.95

99.48

98.2

25.0

24.83

99.31

98.9

40.0

39.81

99.53

99.1

 Mean

 

99.44

98.73

 ± SD

 

0.12

0.47

 % RSD

 

0.116

0.479

 Student t-test

2.52 (2.78)b

 Variance ratio F-value

16.79 (19.0)b

  1. aMean of three determinations.
  2. bValues in parenthesis are the tabulated t- and F-values at p = 0.0564.