title: [Studies on calculus bovis by FTIR-PAS].
abstract: This article reports the characteristics of different colour layers of Calculus Bovis by FTIR-PAS. It is unnecessary to treat the sample before analysis, and the sample can be reused after analysis. The method is fast accurate and easy to operate.
authors.forename: D Y
authors.initials: DY
authors.lastname: Zhao
authors.forename: Z K
authors.initials: ZK
authors.lastname: Wei
authors.forename: H
authors.initials: H
authors.lastname: Tian
mesh_terms: D000818:Animals; D001663:Bilirubin / Q000032:analysis; D002417:Cattle; D002793:Cholic Acids / Q000032:analysis; D005583:Fourier Analysis; D008419:Materia Medica; D013055:Spectrophotometry, Infrared / Q000379:methods
chemical_list: D002793:Cholic Acids; D008419:Materia Medica; D001663:Bilirubin