Determination of Six Macrolide Antibiotics in Chicken Sample by Liquid Chromatography-Tandem Mass Spectrometry Based on Solid Phase Extraction

Table 3

The liquid chromatography gradient elution method.

Time (min)	A (%)	B (%)
0	95	5
1.5	95	5
3	80	20
5	40	60
7	5	95
10	5	95
10.1	95	5
12	95	5