| 摘要 |
PURPOSE:To enable high sensitivity detection by a continuous spectrum even in an ultraviolet region, by using a mercury-xenon lamp as a light source. CONSTITUTION:Light passing through a diffraction grating 6, a light blocking plate 7 and an optical chopper means 9 from a light source 2 is incident to a photoacoustic cell 10 having a specimen stored therein and the sound corresponding to the specimen is generated to perform the specimen analysis through a piezoelectric resistance effect element 11. When a mercury-xenon lamp is used as the light source 2, it is unnecessary to align a radiation wavelength to an absorption wavelength as in the case using monochromatic light as a continuous spectrum by wavelength-spectroscopic energy characteristics and high sensitivity detection can be performed over a wide wavelength band even in an ultraviolet region. |
