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The relationship of the parameters of the optical density of the sample and the absorbance of the sample material
https://doi.org/10.32446/0132-4713.2021-3-22-34
Abstract
The relationship of the parameters of the optical density of the sample and the absorbance of the sample material is studied, which is relevant for the analysis and differentiation of measurement results by devices with light flux filtration and spectral devices (densitometers and spectrophotometers). To identify the analytical dependence of the obtained values of the optical density of the sample and the absorbance of the sample material, a formula is derived for calculating the diffuse optical transmittance density if the detected radiation contains directional and diffuse components. The first term in the obtained formula characterizes the absorbance of the sample material, the second is a correction due to the diffuse component of the radiation, and is a function of the ratio of the diffuse and regular transmittances. Expressions are obtained that allow functional and quantitative determination of the relationship of the absorbance of the sample material and the parameters of the optical transmittance density of the sample. The results of calculating the absorbance of the sample material, the component of diffuse radiation, diffuse optical transmittance density and corrections of these values are presented.
About the Author
S. N. Marchenko
All-Russian Research Institute for Optical and Physical Measurements
Russian Federation
Russian Federation
Sergey N. Marchenko, Moscow
References
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Review
For citations:
Marchenko S.N. The relationship of the parameters of the optical density of the sample and the absorbance of the sample material. Metrologiya. 2021;(3):22-34. (In Russ.) https://doi.org/10.32446/0132-4713.2021-3-22-34
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