Hollow Fibre-Supported Liquid Membrane for the Determination of Sulfonamide Residues in Egg Samples

Figure 10

Chromatogram of a blank egg sample. Chromatographic conditions: flow rate of 1.8 mL min⁻¹, column temperature of 40°C, injection volume of 5 μL, and wavelength of 265 nm. A binary mobile phase comprising solvent (a) (0.1% FA water) and solvent (b) (acetonitrile) with a gradient elution mode of 10% B (0-1 min), 40% B (1–4 min), and 60% B (4–6 min).