发明名称 PHOTOACOUSTIC ANALYSIS METHOD AND APPARATUS
摘要 PURPOSE:To enable highly sensitive quantitative or qualitative analysis regardless of luminous or non-luminous material, by irradiating a trace of solid components in a sample liquid with an intense modulation light to measure a photoacoustic signal while the intensity and spectrum of emission from the sample liquid or the phase of light are measured. CONSTITUTION:Light emitted from a light source 1 undergoes a strong modulation with a modulator 2 and enters a cell 3 as stimulating light 7 to generate a photoacoustic signal or fluorescence of a sample liquid. The photoacoustic signal is amplified with an amplifier 4 with the signal of the light modulator 2 as reference signal. On the other hand, the fluorescence is detected with a detector 5 and converted into an electrical signal to be amplified with an amplifier 6. Output signals of the amplifiers 4 and 6 are processed with a signal processor 11 and the concentration of components of the sample liquid are calculated and displayed.
申请公布号 JPS62129741(A) 申请公布日期 1987.06.12
申请号 JP19850269269 申请日期 1985.12.02
申请人 HITACHI LTD 发明人 KITAMORI TAKEHIKO;FUJIMORI HARUO;SUZUKI KAZUMICHI
分类号 G01N21/00;G01N21/17;G01N21/64;G01N21/84;G01N29/00 主分类号 G01N21/00
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