7Tan B, Ma Y M, Shi R, Wang T M. Simultaneous quantification of three alkaloids of Coptidis Rhizoma in rat urine by high-performance liquid chromatography: application to pharmacokinetic study [J]. Biopharmac Drug Dispos, 2007,20(9) :511 -6.
8Feng Z, Norio N, Teruaki A, et al. Pharmacokinetics of berberine and Its main metabolites in conventional and pseudo germ-Free rats determined by liquid chromatography ion trap mass spectrometry. Drug Meta Dispos, 2006,34:2064 -72.
9Chen C M, Chang H C. Determination of berberine in plasma, urine and bile by high-performance liquid chromatography [ J ]. J Chromatogr lliomed Appl, 1995,665 ( 1 ) : 117 - 23.
10Lu T, Liang Y, Song J, et al. Simultaneous determination of berberine and palmatine in rat plasma by HPLC-ESI-MS after oral administration of traditional chinese medicinal preparation Huang-Lian-Jie-Du decoction and the pharmacokinetic application of the method[J]. J Pharm Biomed Anal, 2006,40(5) :1218 -24.