| 摘要 |
PURPOSE:To make an atomization degree constant and to enhance the durability of a specimen cell, by a method wherein the cross-sectional configuration of the graphite tube for an atomization furnace is formed into a bottomed horseshoe shape and a box shaped specimen cell is integrally formed to the lower part of the cylindrical part of said tube in a projected state. CONSTITUTION:A graphite tube 1 is formed into a bottomed horseshoe shape having a crose-sectional area wherein a groove shaped box part 3 is formed to the lower part of a cylindrical part 2 in a projected state and a specimen cell S is supported by placing the same on the ridgeline parts A, A formed by the inner surfaces of both parts 2, 3. A specimen injection orifice 4 and inert gas effluent parts 5, 5 are provided to the upper part of the cylindrical part 2 and gas effluent orifices 5 are provided to the bottom of the box part. At first, the tube 1 is heated while supplying a current thereto to uniformly heat the cell S through the inert gas in the tube 1 and a specimen is dripped from the orifice 4. The specimen atomized in a definite ratio in the cell S uniformly heated to a high temp. is raised to form a high concn. atmosphere while guarded by the wall surface of the cell S without being diffused. |
