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Table 3 Analytical performance data for the determination of DRT, CAFF and PAR by the mean centering method

From: Smart green spectrophotometric assay of the ternary mixture of drotaverine, caffeine and paracetamol in their pharmaceutical dosage form

Parameter

DRT

CAFF

PAR

Wavelength (nm)

309 nm

214 nm

248 nm

Linearity range (µg/mL)

2–20

1.5–15

2–40

Intercept (a) × 10–3

8.812

57.95

7.16

Slope (b) × 10–3

3.061

344.42

0.790

Correlation coefficient (r)

0.9999

0.9999

0.9999

S.D. of residuals (Sy/x) × 10–3

0.34

26.01

0.28

S.D. of intercept (Sa) × 10–3

0.24

11.81

0.16

S.D. of slope (Sb) × 10–3

0.02

2.37

0.004

% RSDa

1.05

1.12

0.87

% Errorb

0.43

0.46

0.36

LODc (µg/mL)

0.26

0.11

0.67

LOQd (µg/mL)

0.79

0.34

2.03

  1. aPercentage relative standard deviation
  2. bPercentage relative error
  3. cLimits of detection
  4. dLimits of quantitation
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BMC Chemistry

ISSN: 2661-801X

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