PROBLEM TO BE SOLVED: To provide a concentration assaying device and a concentration assaying method and a program that can non-invasively and accurately measure the concentration of a target component contained in an observation object by compensating for temperature variations in the observation object on the basis of the temperature-dependent variation rate of the absorption coefficient of water contained in this observation object with respect to near-infrared rays.SOLUTION: A concentration assaying device comprises: an irradiating unit 5 that irradiates a skin with light a light scattering medium selecting unit 7 that selects a back-scattered light beam radiated from a dermal layer out of back-scattered light beams from the skin a light receiving unit 8 that receives the back-scattered light beam radiated from the dermal layer a temperature sensor that measures the temperature of the dermal layer a light intensity acquiring unit 9 that acquires the intensity of the back-scatter light beam received by the light receiving unit 8 a light absorption coefficient calculating unit 12 that calculates the light absorption coefficient of the dermal layer a concentration calculating unit 13 that calculates the glucose concentration of the dermal layer and a concentration correcting unit 14 that corrects the glucose concentration on the basis of the temperature of the dermal layer.COPYRIGHT: (C)2012,JPO&INPIT【課題】観測対象の温度変化を、この観測対象に含まれる水の近赤外光に対する吸収係数の温度変化率を基に補正することで、この観測対象に含まれる目的成分の濃度を、非侵襲的に精度良く測定することが可能な濃度定量装置及び濃度定量方法並びにプログラムを提供する。【解決手段】本発明の濃度定量装置は、皮膚に光を照射する照射部5と、皮膚からの後方散乱光から真皮層より放射される後方散乱光を選択する光散乱媒質層選択部7と、真皮層から放射される後方散乱光を受光する受光部8と、真皮層の温度を測定する温度センサと、受光部8が受光した後方散乱光の強度を取得する光強度取得部9と、真皮層の光吸収係数を算出する光吸収係数算出部12と、真皮層のグルコース濃度を算出する濃度算出部13と、グルコース濃度を真皮層の温度に基づいて補正する濃度補正部14とを備えている。【選択図】図1
