title: Application of Fourier Transform Infrared Spectra (FTIR) Fingerprint in the Quality Control of Mineral Chinese Medicine Limonitum.
abstract: In the present paper, the fingerprint of Limonitum (a mineral Chinese medicine) by FTIR was established, and the spectrograms among crude samples, processed one and the adulterant sample were compared. Eighteen batches of Limonitum samples from different production areas were analyzed and the angle cosine value of transmittance (%) of common peaks was calculated to get the similarity of the FTIR fingerprints. The result showed that the similarities and the coefficients of the samples were all more than 0.90. The processed samples revealed significant differences compared with the crude one. This study analyzed the composition characteristics of Limonitum in FTIR fingerprint, and it was simple and fast to distinguish the crude, processed and the counterfeit samples. The FTIR fingerprints provide a new method for evaluating the quality of Limonitum.
authors.forename: Sheng-jin
authors.initials: SJ
authors.lastname: Liu
authors.forename: Huan
authors.initials: H
authors.lastname: Yang
authors.forename: De-kang
authors.initials: DK
authors.lastname: Wu
authors.forename: Chun-xiang
authors.initials: CX
authors.lastname: Xu
authors.forename: Rui-chao
authors.initials: RC
authors.lastname: Lin
authors.forename: Jin-gai
authors.initials: JG
authors.lastname: Tian
authors.forename: Fang
authors.initials: F
authors.lastname: Fang
mesh_terms: D008516:Medicine, Chinese Traditional; D008903:Minerals / Q000032:analysis*; D011786:Quality Control; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D008903:Minerals