| 摘要 |
PURPOSE:To offor an easy operational analyzing apparatus of quantitative determination of carbon with a simple construction, by utilizing a temperature dependence property of desorption speed of gaseous carbon dioxide adsorbed to an adsorbent. CONSTITUTION:Gaseous oxygen of a fixed flow sate is introduced from a gaseous oxygen entrance 6 and a transporting gas of a fixed flow rate is introduced from a transporting gas entrance 7. Further, a combustion system is connected to a measurement system and a transporting gas system is connected to a discharge system by operating a gas flow passage switching device 2. Thus, the combustion system and the measurement system are filled with a gaseous oxygen current and the transporting gas system and the discharge system are filled with a transporting gas current. Next, a sample 10 to be analyzed is put in a sample oxidizer 1 and is oxidized at a high temperature and then, carbon in the sample is converted into gaseous carbon dioxide or gaseous carbon monoxide. Said gas is sent to the measurement system together with a gaseous oxygen current and the gaseous carbon monoxide is converted into the gaseous carbon dioxide in a oxydizing agent column 3 and then, the gaseous carbon dioxide is caught quantitatively in an adsorbent column 4 at room temperature. Next, the combustion system is connected to the discharge system and the transporting gas system is connected to the measurement system by operating the device 2 and then, the measurement system is filled with a transporting gas current of a fixed flow ate. Lastely, the temperature of the adsorbent in the column 4 is raised at a constant heating speed and desorbed gaseous carbon dioxide is detected by a gaseous dioxide detector 5. |
