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Table 4 Statistical and linear regression parameters of the validation set using siPLS model

From: Smart chemometrics-assisted spectrophotometric methods for efficient resolution and simultaneous determination of paracetamol, caffeine, drotaverine HCl along with three of their corresponding related impurities

Parameters

siPLS [10 12 14 17]

PAR

CAF

DRO

PAP

THEO

HVA

Mean recovery %

100.66

98.03

101.20

98.65

100.56

100.33

SD

1.075

1.280

1.149

1.466

0.954

0.957

RSD %

1.068

1.3063

1.135

1.486

0.949

0.954

RMSEP

0.12149

0.10483

0.03419

0.04382

0.02054

0.03517

Correlation coefficient (r)

0.9985

0.9996

0.9994

0.9993

0.9998

0.9998

Slope

0.9776

0.9467

0.9935

0.9616

0.9765

1.0445

Intercept

0.3112

0.1226

0.0440

0.0459

0.067

− 0.1267

LODa

0.353

0.081

0.078

0.056

0.033

0.032

LOQa

1.070

0.245

0.237

0.169

0.100

0.096

  1. aCalculated from equation [LOD (limit of detection) = 3.3 (SD/S), LOQ (limit of quantification) = 10 (SD/S); where SD is the standard deviation of regression residuals and S is the slope of the calibration curves
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BMC Chemistry

ISSN: 2661-801X

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