The spectra of emplastrum obtained by ATR difference spectrometry were in good agreement with those of pure effective constituents extracted with supercritical fluid extraction technique.

• 用差谱技术得到的谱图与超临界流体萃取技术制备的纯有效成分的谱图基本一致,表明贴膏剂的制作工艺非常成功,药物成分没有与粘着性基质或其它助剂发生化学作用。