The HPLC analysis was carried out on a TSK-gel ODS 80Ts column (4.6x250 mm) with
0.05 mol/L phosphate buffer (pH 2.5)-acetonitrile (4: 1) containing 0.25 g/L sodium octanesulfonate
as the mobile phase at a flow rate of 1.0 mL/min. A spectrofluorometric detector was
operated at Ex 290 nm and Em 460 nm. The recoveries of six drugs from fortified meat were
greater than 80% and the detection limits were in the range of 0.0025-0.05ug/g.