title: [The Lambert-Beer's law characterization of formal analysis in Terahertz spectrum quantitative testing].
abstract: The present paper discusses the Lambert-Beer' s law application in the terahertz spectrum, studies the single amino acid tablet sample (glutamine) and two kinds of amino acids mixture tablet (threonine and cystine) under the condition of different concentrations. Absorbance and absorption coefficient was analyzed in the description of the terahertz optical properties of matter. By comparing absorption coefficient and absorbance value of the single component in the vicinity of 1. 72 THz, we verified the material under two kinds of absorption characterization of quantity of THz wave absorption along with the change in the concentration. Using the index of goodness of fit R , it studied the stand or fall of linear relationship between the terahertz absorption quantity of material and concentration under two kinds of representation. This paper analyzes the two components mixture under two kinds of absorption characterization of quantity of terahertz absorption in 0. 3-2. 6 THz. Using the similarity co- efficient and the estimate concentration error as evaluation index, it has been clear that the absorbance of additivity instead of the absorption coefficient should be used during the terahertz spectrum quantitative test, and the Lambert-Beer's law application in the terahertz wave band was further clarified.
authors.affiliation: Department of Instrumentation Science, University of Science & Technology Beijing, Beijing 100083, China. shx20100397@163.com
authors.forename: Hai-Xia
authors.initials: HX
authors.lastname: Su
authors.affiliation: Department of Instrumentation Science, University of Science & Technology Beijing, Beijing 100083, China.
authors.forename: Zhao-Hui
authors.initials: ZH
authors.lastname: Zhang
authors.affiliation: Department of Instrumentation Science, University of Science & Technology Beijing, Beijing 100083, China.
authors.forename: Xiao-Yan
authors.initials: XY
authors.lastname: Zhao
authors.affiliation: Department of Instrumentation Science, University of Science & Technology Beijing, Beijing 100083, China.
authors.forename: Zhi
authors.initials: Z
authors.lastname: Li
authors.affiliation: Department of Instrumentation Science, University of Science & Technology Beijing, Beijing 100083, China.
authors.forename: Fang
authors.initials: F
authors.lastname: Yan
authors.affiliation: Department of Instrumentation Science, University of Science & Technology Beijing, Beijing 100083, China.
authors.forename: Han
authors.initials: H
authors.lastname: Zhang
mesh_terms: D000596:Amino Acids / Q000032:analysis*; D055068:Terahertz Spectroscopy
chemical_list: D000596:Amino Acids