Spectroscopic measurement device and spectroscopic measurement method
A technology for measuring device and measuring method, which is applied in the direction of measuring device, spectrometry/spectrophotometry/monochromator, optical radiation measurement, etc., and can solve the problems of increasing control device, difficulty in miniaturization, and complex system, etc.
Active Publication Date: 2015-09-30
ARKRAY INC
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- Claims
- Application Information
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Problems solved by technology
As a result, it is difficult to downsize due to the increase of control devices, and the system also becomes complicated
Method used
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[0093] Hereinafter, modes for implementing the present invention will be described in detail with reference to the drawings. It should be noted that, in the drawings, the same or equivalent parts are denoted by the same reference numerals.
[0094] figure 1 It is a block diagram showing a configuration example of a spectroscopic measurement device according to an embodiment of the present invention. The spectrometer 1 includes a light emitting unit 11 , a sample chamber 12 , a light receiving unit 13 , a detecting unit 14 , a computing unit 15 , an output unit 18 , and a control unit 19 . The calculation unit 15 includes an optical path length calculation unit 16 and a correction unit 17 . The sample chamber 12 supports the spectrometer 2 . A test substance 3 which is a solution containing a substance to be analyzed is held in the spectrometer 2 . The portion of the spectrometer tool 2 holding the test object 3 is transparent, and light irradiated from the outside passes t...
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Abstract
A light emitter (11) emits light with a plurality of wavelengths towards a test obj ect (3) held in a spectrophotometer tool (2). A light receiver (13) receives the light passing through the test object (3). A detector (14) detects absorbances of wavelength components from the light received. An optical path length calculator (16) compares, in the absorbances of the wavelength components detected, a wavelength component absorbance of light absorbed by a pigment that absorbs light with a wavelength other than a wavelength of light absorbed by an analyte in the test object (3) and a predetermined value of the wavelength component absorbance to calculate an optical path length. A corrector (17) corrects the wavelength component absorbance detected excluding the wavelength of the light absorbed by the pigment using the optical path length calculated by the calculator (16) to calculate a corrected wavelength component absorbance in a reference optical length.
Description
technical field [0001] The present invention relates to a spectrometry device, a spectrometry tool, and a spectrometry method for analyzing the concentration of an analyte of a test substance by absorptiometry. Background technique [0002] The wavelength of light absorbed by a substance differs from substance to substance. Its absorbance varies according to the concentration of the substance in the solution and the optical path length. It is known that when the concentration of the sample is small, the absorbance of light passing the same distance in the solution is proportional to the concentration of the sample (Lambert-Beer's law). Quantitative analysis of a sample by absorptiometry is performed using this Lambert-Beer law. The absorptiometry is a method of quantitatively analyzing the concentration of a substance by irradiating light to a sample solution and measuring the degree of absorption of light by a target substance when the light passes through the sample solu...
Claims
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IPC IPC(8): G01N21/31G01N21/01
CPCG01J3/0267G01N21/274G01N21/78G01N21/31G01J3/42G01J3/10G01J3/027G01J3/32
Inventor 大久保章男中村勤
Owner ARKRAY INC