Study of infrared spectroscopic analysis of Chinese traditional medicines Liuweidihuangwan

Seven types Luiweidihuangwan from six factories were chosen,randomly sampled,ground after being broken and dried,stirred with KB,and pressed into tablets.Infrared spectra of the tablets were obtained and compared.It is concluded that infrared spectra can be used to qualitatively analyse and distinguish patent medicines from different factories with different types and batches.