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

Figure 4

HPLC chromatograms of SAs (10 μg mL⁻¹) at different elution time zone (a) 20–24 s, (b) 25–29 s, (c) 30–34 s. Other conditions are the same as in Figure 2.

(a)

(b)

(c)