Optics: measuring and testing – By dispersed light spectroscopy – With raman type light scattering
Patent
1996-08-08
1998-05-19
Evans, F. L.
Optics: measuring and testing
By dispersed light spectroscopy
With raman type light scattering
G01J 344, G01I 2165
Patent
active
057542880
ABSTRACT:
As to respective expiration components to be measured, wavelengths having excellent correlations between component concentrations and Raman spectral intensity values are previously selected as measuring wavelengths which are specific to the components, an expiration specimen is irradiated with Raman excitation light, Raman spectra at the measuring wavelength which is specific to nitrogen and those at the measuring wavelengths previously selected for the components to be measured respectively are measured, Raman spectral intensity ratios of the components to the Raman spectral intensity of nitrogen are obtained, and the respective expiration components are quantitatively analyzed through a calibration curve which is previously prepared as to the Raman spectral intensity ratios of the respective components to nitrogen and concentrations. It is possible to provide a measuring method utilizing Raman spectroscopy, which can directly determine intra- expiratory components in a short time with no requirement for expendable items.
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Dou Xiaoming
Shimada Kentaro
Uenoyama Harumi
Wang Yung Xiang
Yamamoto Hiroshi
Evans F. L.
Kyoto Dai-Ichi Kagaku Co., Ltd.
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