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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