| 摘要 |
PROBLEM TO BE SOLVED: To improve the measurement accuracy of the component concentration of a component to be measured.SOLUTION: The variation of a photoacoustic signal Sfor normalization detected when the wavelength λof the light from a second light source 106 is swept in a predetermined wavelength range is determined. The ratio of the variation of the photoacoustic signal Sfor normalization to the absorbance variation in the wavelength range is calculated as a proportionality coefficient C'. A differential photoacoustic signal Sdetected when the multiplexed light is radiated is divided by the proportionality coefficient C'. Thus, the absorbance αby glucose or the like in a measuring object is determined, and the component concentration is calculated. |
