Rapid and Simple Determination of Sarafloxacin and Difloxacin in Beef by Capillary Electrophoresis Coupled with Solid-Phase Extraction

Table 1

The results of orthogonal experiment.

	Ion concentration (mmol/L)	pH	Separation voltage (kV)	Temperature (°C)	Resolution (R)	Analysis time (min)
1	30	8.6	20	22	2.1	5.38
2	30	8.8	22	25	1.8	5.02
3	30	9.0	25	27	1.7	3.46
4	35	8.6	22	27	1.0	4.82
5	35	8.8	25	22	1.9	3.58
6	35	9.0	20	25	2.8	5.70
7	40	8.6	25	25	1.8	3.52
8	40	8.8	20	27	1.1	5.28
9	40	9.0	22	22	2.0	5.17