主题：【求助】(已应助)J AOAC Int文献,万分感激！

1Thomas JB, Sharpless KE, Mitvalsky S, Roman M, Yen J, Satterfield MB.
Determination of caffeine and caffeine-related metabolites in ephedra-containing standard reference materials using liquid chromatography with absorbance detection and tandem mass spectrometry[J]. J AOAC Int. 2007,90(4):934-40.
链接：  http://www.atypon-link.com/AOAC/doi/abs/10.5555/jaoi.90.4.934

2Trujillo WA, Sorenson WR, Laluzerne PS, Scheuerell CR.
Comparison of various dilutions and solid-phase extraction cleanup on the determination of ephedrine-type alkaloids and internal standard recovery in ephedra botanical raw material and powdered extract[J]. J AOAC Int. 2005,88(4):1028-47.
链接：  http://www.atypon-link.com/AOAC/doi/abs/10.5555/jaoi.2005.88.4.1028

3 Roman MC. Determination of ephedra alkaloids in urine and plasma by HPLC-UV: collaborative study[J]. J AOAC Int. 2004 ,87(1):15-24
链接： http://www.atypon-link.com/AOAC/doi/abs/10.5555/jaoi.2004.87.1.15

4 Roman MC.Determination of ephedrine alkaloids in botanicals and dietary supplements by HPLC-UV: collaborative study[J]. J AOAC Int. 2004 ,87(1):1-14.
  http://www.atypon-link.com/AOAC/doi/abs/10.5555/jaoi.2004.87.1.1

5 Trujillo WA, Sorenson WR.Determination of ephedrine alkaloids in dietary supplements and botanicals by liquid chromatography/tandem mass spectrometry: collaborative study[J]. J AOAC Int. 2003 ,86(4):657-68
  http://www.atypon-link.com/AOAC/doi/abs/10.5555/jaoi.2003.86.4.657

6Sullivan D, Wehrmann J, Schmitz J, Crowley R, Eberhard J，Determination of ephedra alkaloids by liquid chromatography/tandem mass spectrometry[J]. J AOAC Int. 2003 ,86(3):471-5.
  http://www.atypon-link.com/AOAC/doi/abs/10.5555/jaoi.2003.86.3.471