| 摘要 |
PURPOSE:To achieve a higher sensitivity by a method wherein a capillary tube absorption cell is arranged to house a solvent with a larger refractive index than material thereof and a sample dissolved or dispersed therein and light is made incident at one end of the cell to be absorbed. CONSTITUTION:A capillary tube 5 as absorption cell is so arranged to introduce a solvent with a larger refractive index than material thereof at the inlet 6 and drain from the outlet 7 and an incident light Io from a light source 1 is made to enter the incident end of the tube 5 through a lens 2 or the like. Then, the emission light I from the emission end of the tube 5 is detected with a photodiode 8 and recorded on a recorder 11 via an amplifier 9 while done on a CRT12 or the like via a microprocessor 10. Thus, the tube 5 can be lengthened with a limited space by bending while attenuation due to reflection on the wall of the tube 5 can be eliminated. |
