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

<div>SY profiles obtained with step gradient elution. 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 5% or 10% after 10 mL. SY amount is 75 <i>μ</i>g.</div>

International Journal of Analytical Chemistry

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Figure 3

Figure 3: Simultaneous Determination of Synthetic Food Dyes Using a Single Cartridge for Preconcentration and Separation Followed by Photometric Detection 

Figure 3 | Simultaneous Determination of Synthetic Food Dyes Using a Single Cartridge for Preconcentration and Separation Followed by Photometric Detection 