| 摘要 |
PURPOSE:To obtain a spectrochemical analysis apparatus having high reliability by executing signal processing while correcting the deviation of wavelength in a case in which a material to be measured is installed in an optical path and a case in which said material is not installed in the signal processing part of the spectrochemical analysis apparatus. CONSTITUTION:An empty sample cell 5 is first set and is subjected to measurement in the absent state of a sample. A CPU 10 operates a pulse motor 9 by the instruction from a keyboard 12 to drive a diffraction grating 4 having concave faces thereby making wavelength scanning. The intensity of the exit light of this time is taken in by an A/D converter 8 and the spectrum of the case in which the absorption by the sample is not received is obtd. The sample is then installed in the cell 5 and thereafter, the wavelength scanning is similarly executed to obtain the spectrum of the case in which the sample is installed. The peaks of the case in which the sample is installed and the case in which the sample is not installed are thereby extracted and the wavelengths thereof are compared. There is a case in which the wavelength of the peaks shifts as a result of the reception of the absorption and, therefore, the peaks which are largely deviated in comparison with the others are removed and the regular deviations of the wavelengths are detected. As a result, the deviations of the wavelength of the case in which the sample is installed and the case in which the sample is not installed are corrected. |
