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Table 3 Linear equations, R 2 coefficients, values of the standard deviation of y-intercept (SD(A)) and the values of limits of detection (LOD) and quantification (LOQ) for the calibration curve utilizing the ratio of absorbencies

From: Application of alizarin colorimetric measurements for quantification of amine extraction by model food simulants from epoxy polymer

Calibration data

95% ethanol

10% ethanol

3% acetic acid

Water

SD(C)

0.020758

0.003153

0.000619

0.019432

LOD [mg/ml]

0.004527

0.000560

0.000979

0.003051

LOQ [mg/ml]

0.013582

0.001680

0.002938

0.009154

R2 coefficient

0.9564

0.9945

0.9904

0.97

Linear equation

y = 15.131x + 0.131

y = 18.583x + 0.9191

y = 2.0863x + 0.1079

y = 21.016x-0.0621

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