8SCHILT R, HOOIJERINK H, COURTHEYN D, et al. β- Agonists in animsl feed I : First intercomparison of methods of analysis for clenbuterol in animal feed materials[J]. Food Additives and Contaminants, 1996, 13(5) : 477- 492.
9COURTHEYN D, DESAEVER C, VERHE R. High-performance liquid chromatographic determination of denbuterol and cimaterolusing post column derivatization[J]. J Chromatogr, 1991, 564(3): 537- 549.
10VAN CINKEL L A, STEPHANY R W, VAN ROSSUM H J. Development and validation of a muhiresidue method for β-ago-nists in biological samples and animal feed[J]. J AOAC Int, 1992, 75(3): 554- 560.
