有機微量分析の研究 (第13報)
前部制動法並びに酸化コバルトを燃焼助剤とするDumas新窒素分析装置に就いて
1956 年 76 巻 10 号 p. 1161-1166
詳細
1956 年 76 巻 10 号 p. 1161-1166
The conventional Dumas' nitrogen determing apparatus contains a flow choking device (microstopcock or a needle valve) between the combustion tube and azotometer, but such a position often causes backflow of the sample vapor toward the mouth of the combustion tube. A new apparatus was therefore designed with a new flowchoking device provided with a glass capillary tube inserted just in front of the combustion tube, in addition to a new sampling method using cobaltic oxide and an improved modifications on the flow meter or Gysel's backflash sweeping system.
