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Table 1 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 absorbance at 527 nm

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)

0.000205

0.000334

0.000621

0.000596

LOD [mg/ml]

0.000122

0.000795

0.000101

0.000203

LOQ [mg/ml]

0.000366

0.002385

0.000304

0.000610

R2 coefficient

0.9988

0.9922

0.999

0.998

Linear equation

y = 5.544x + 0.242

y = 1.389x + 0.128

y = 11.293x + 0.1644

y = 9.6858x + 0.165

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