| 摘要 |
PURPOSE:To permit accurate and rapid analysis in a position separated at a large distance by an apparatus wherein the molten metal is brought into the overheated state to generate ultrafine particles utilizing the evaporation action, which particles are fed to the analyzer together with the stream of inert gas. CONSTITUTION:A plasma arc or the like is irradiated to a molten metal 5 by a heater 3 in a fine particle generator 1 to bring it to the overheated state under still higher temperature, thereby to evaporate ultra fine particles. Inert gas is introduced from a gas inlet pipe 7 to produce a gas current rising through a cylindrical pipe 2. When the evaporated ultrafine particles are sent together with the stream of inert gas to an opening of a feed pipe provided as a double pipe outside of a heating source irradiating pipe 4, coarse particles are returned to the surface of the molten metal and only the fine particles are sent to an analyzer 29 via a distributor 14. Then, the fine particles are excited in a high-temperature plasma section 22 formed by a high-frequency generator 21 to emit a light, which is subject to spectrochemical analysis. |
