Simultaneous Determination of Synthetic Food Dyes Using a Single Cartridge for Preconcentration and Separation Followed by Photometric Detection

<div>Elution curves of a mixture of TAR and SY in the ratio of 5 : 1 (20 and 100 <i>μ</i>g) and 1 : 5. Eluent: 2 mmol·L<sup>−1</sup> KH<sub>2</sub>PO<sub>4</sub> (pH 3) containing 2.5% acetonitrile with step increase to 10% after 17 mL.</div>

International Journal of Analytical Chemistry

fig4

Figure 4

Figure 4: Simultaneous Determination of Synthetic Food Dyes Using a Single Cartridge for Preconcentration and Separation Followed by Photometric Detection 

Figure 4 | Simultaneous Determination of Synthetic Food Dyes Using a Single Cartridge for Preconcentration and Separation Followed by Photometric Detection 