The effective constituents of Chinese drug emplastrum for curing psoriasis were studied by using ATR FTIR and IR difference spectrometry.

• 采用衰减全反射-傅里叶变换红外光谱法(ATR-FTIR)和红外差谱技术研究了用于治疗银屑病贴膏剂的有效中药成分。