Automated Online Solid-Phase Extraction Coupled with Sequential Injection-HPLC-EC System for the Determination of Sulfonamides in Shrimp

Figure 3

HPLC chromatograms of seven SAs (10 μg mL⁻¹) at different sample loading flow rates (a) 0.66, (b) 0.60, (c) 0.54, (d) 0.48 mL min⁻¹. HPLC pump flow rate was set at 1.5 mL min⁻¹. (1) SG, (2) SDZ, (3) SMZ, (4) SMM, (5) SMX, (6) SDM, and (7) SQ. Other conditions are the same as in Figure 2.

(a)

(b)

(c)

(d)