| 摘要 |
PURPOSE:To perform high sensitivity flame atom absorption analysis showing a high S/N ratio, in performing measurement, by spraying a specimen solution discharged from a sprayer in a mist form to a dispersing device having a reticulated structure to allow the same to pass through said dispersing device. CONSTITUTION:A concentric type sprayer 3, wherein a vacuum phenomenon generated by auxiliary fuel gas flowing as a high speed stream is applied, discharges a specimen solution 4 in a mixing chamber 7 for mixing fuel and the auxiliary fuel gas through a tube 5 in a conical mist state 6 non-uniform in a particle size. The mist is passed through a dispersing device 8 having a reticulated structure by discharge force to be dispersed and further formed into fine particles to be guided to a burner 10 along with the fuel and the auxiliary fuel gas as mist 9 having a unified particle size, and burnt and decomposed to form the atomic vapor of a metal element while light with a specific wavelength passing through the formed flame is absorbed. Large particles removed by a decomposition device 8 are discharged from a discharge port 11 as a waste solution. The gap between the decomposition device 8 and the sprayer 3 can be adjusted by a gap adjusting mechanism 12. |
