The absorbance values at 250nm of 5 standard solutions, and sample solution of a drug are given below: Conc. (ug/ml)          A 250 nm 10                                0.168 20.                               0.329 30                                0.508 40.                               0.660 50                                0.846 Sample.                      0.661 Calculate the concentration of the sample

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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.