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

Table 2

Linearity, limit of detection (LOD), and limit of quantitation (LOQ) of the online SPE-HPLC-EC method (𝑛=3).

Analytes	Linearity (μg mL^−1)	Slope (peak area units/μg mL^−1)	Intercept (μA)	𝑅^2	LOD (ng mL^−1)	LOQ (ng mL^−1)
SG	0.01–8	0.5277	0.1085	0.9943	11.2	33.6
SDZ	0.01–8	7.6757	0.0403	0.9982	1.2	4.0
SMZ	0.01–8	6.5834	0.0769	0.9990	1.3	4.2
SMM	0.01–8	5.2178	0.3764	0.9965	1.5	5.0
SMZ	0.01–8	2.4536	0.0679	0.9994	2.9	9.8
SDM	0.1–8	2.3970	0.2668	0.9957	3.1	10.3
SQ	0.1–8	0.8786	0.0419	0.9997	7.4	24.6