電子管制御式窒素自動燃焼装置

概要

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A new automatic apparatus for the micro-Dumas method was described.The moving furnace was moved at the rate of 13mm/min.by a synchronized motor and it was stopped whenever the pressure in t e combustion tube was increased.Thus, the furnace did not move until it was heated to the maximum temperature, and it was also stopped when the sample was evaporated or oxidized.Mercury was used in the manometer as shown in Fig.3.Another relay was connected to the electric bubble counter as shown in Fig.3.B, and the volume of the gas passed through was counted. Mercury and a small quantity of liquid paraffin was placed in the bubble counter. A gasometer of 200cc (Fig. 1 Az2) was equipped to check the counter and to substitute the air with pure CO2 quantitatively.In this apparatus, fine stop cock (Fig.1 k2) was always set to give the gaseous velocity of 4-5cc/min.The stop cock k3 was closed during the stage of buring of the sample and it was opened during the sweeping stage.
社団法人日本分析化学会の論文