The calibration curve was determined to be as the following: y = 0.0269x + 0.0054, where y is absorbance value of sample, x is sample concentration (10–300 lg/mL) (R2 = 0.9996).
Thecalibration curve was determined to be as the following:y = 0.0269x + 0.0054, where y is absorbance value of sample, x issample concentration (10–300 lg/mL) (R2 = 0.9996).