Analysis of Food Dyes
Qualitative and Quantitative Analysis of Food Dyes
Taking the spectrum of each dye for identification:
Once the spectrum of the unknown dye and its similarly colored standard dyes are taken, we can match them to determine the unknown’s identity.
Since similar dyes have similar spectra, you have to carefully compare the spectrum of your unknown to the spectra of known dyes with similar colour. In the laboratory, the program called ColourMixer (similar to the simulation above) will help you with this process.
Now that we have identified our dyes, we can quantitatively determine their concentrations