Verify your molar absorptivity value. Did you report your data to the correct number of significant figures? Analytical wavelength Analytical wavelength for blue dye (nm) Calibration curve Solution 1 2 3 4 5 сл Dye concentration (μM) 15.20 7.51 3.74 1.89 1.01 Molar absorptivity (μM-¹cm¹) 629 Absorbance 0.756 0.432 0.259 0.175 0.144 0.083

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Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.