Method of optically measuring component in solution
First Claim
1. A measuring method comprising the steps of:
- for a plurality of components of a body fluid to be measured, previously selecting a wavenumber having an excellent correlation between the concentration of a component and light scattering spectral intensity as a measuring wavenumber which is specific to said component;
irradiating a body fluid sample with excitation light for measuring light scattering spectral intensity at each said measuring wavenumber as to said each component to be measured or light scattering spectral cumulative intensity in each measuring wavenumber range; and
simultaneously qualitatively/quantitatively analyzing respective said components in said body fluid through a calibration curve being previously prepared as to said light scattering spectral intensity at each said measuring wavenumber or said light scattering spectral cumulative intensity in said each measuring wavenumber range and the concentration of said component.
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Abstract
A sample solution containing protein is irradiated with excitation light of a single wavelength which is emitted from a light source, so that light scattered from the sample solution is received and separated into its spectral components in a spectroscope, thereby obtaining light scattering spectra. Protein is quantitatively measured through intensity of a light scattering spectrum in a shift wavenumber of 100 to 3100 cm-1 with respect to the excitation wavelength among the light scattering spectra or an integral value in a proper range therein. As to a body fluid sample, the sample is irradiated with excitation light and Raman scattering spectral intensity values are measured at a plurality of wavenumbers in an arbitrary wavenumber range, and a plurality of components in the sample are analyzed simultaneously by multivariate regression analysis.
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Citations
8 Claims
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1. A measuring method comprising the steps of:
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for a plurality of components of a body fluid to be measured, previously selecting a wavenumber having an excellent correlation between the concentration of a component and light scattering spectral intensity as a measuring wavenumber which is specific to said component; irradiating a body fluid sample with excitation light for measuring light scattering spectral intensity at each said measuring wavenumber as to said each component to be measured or light scattering spectral cumulative intensity in each measuring wavenumber range; and simultaneously qualitatively/quantitatively analyzing respective said components in said body fluid through a calibration curve being previously prepared as to said light scattering spectral intensity at each said measuring wavenumber or said light scattering spectral cumulative intensity in said each measuring wavenumber range and the concentration of said component. - View Dependent Claims (2, 3, 4, 5)
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6. A method of measuring albumin by irradiating a sample solution containing albumin with excitation light of a single wavelength, receiving scattered light from said sample solution and separating the same into its spectral components for obtaining light scattering spectra, and quantitatively measuring albumin through peak intensity of a spectrum being shifted from said excitation wavelength to 810 to 840 cm-1, or an integral value of a proper range of a spectrum being shifted from an excitation wavelength of 632.8 nm to 256 to 1620 cm-1 or from an excitation wavelength of 514.5 nm to 837 to 3060 cm-1.
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7. A method of measuring γ
- -globulin by irradiating a sample solution containing γ
-globulin with excitation light of a single wavelength, receiving scattered light from said sample solution and separating the same into its spectral components for obtaining light scattering spectra, and quantitatively measuring γ
-globulin through peak intensity of a spectrum being shifted from said excitation wavelength to 175 to 195 cm-1, 425 to 450 cm-1, 640 to 670 cm-1, 820 to 845 cm-1, 845 to 870 cm-1, 1370 to 1400 cm-1 1575 to 1620 cm-1, 1850 to 1900 cm-1, 2000 to 2200 cm-1, 2350 to 2400 cm-1 or 2400 to 2460 cm-1.
- -globulin by irradiating a sample solution containing γ
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8. A method of measuring hemoglobin by irradiating a sample solution containing hemoglobin with excitation light of a single wavelength, receiving scattered light from said sample solution and separating the same into its spectral components for obtaining light scattering spectra, and quantitatively measuring hemoglobin peak intensity of a spectrum being shifted from said excitation wavelength to 640 to 670 cm-1, 820 to 845 cm-1, 1370 to 1400 cm-1, 1575 to 1620 cm-1, 1850 to 1900 cm-1, 2000 to 2200 cm-1, 2350 to 2400 cm-1 or 2400 to 2460 cm-1.
Specification