Analytical method and apparatus for blood using near infrared spectroscopy

摘要

First, monochromatic near infrared light in a wavelength range of 700nm-1100nm from the slit of the near infrared apparatus 1 is applied to a ceramic plate through the optical fiber 7 to measure a transmitted light intensity of the ceramic plate which is a reference material for spectrum measurement. Next, in place of the ceramic plate, a blood collection tube 4 containing a blood sample of which the temperature has been adjusted at a predetermined temperature by a water bath and the like is inserted into the housing portion 5. The transmitted light intensity of the blood sample is thus measured using the same procedure as above. A so-called near infrared absorption spectrum in which absorbance has been plotted against wavelengths is displayed on the screen of the computer 2. Information about object characteristics is extracted from the spectrum data using a calibration equation.