元素分析用高周波炉について

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タイトル別名
  • Furnace for elementary analysis using highfrequency power
  • ゲンソ ブンセキヨウ コウシュウハロ ニ ツイテ

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抄録

An electric furnace with an internal heating system employing high frequency power has been devised for the elementary analysis of organic compounds; and its efficiency has been investigated. The apparatus utilizes a Hartley circuit, and its main part is composed of a rectifying circuit, a frequency circuit, and a load-carrying circuit. The load-carrying circuit, corresponding to the heating furnace of analytical equipment, is divided into four parts an oxygen refining furnace, a combustion furnace for the sample, an oxidation accelerating furnace equipped to absorb harmful gases, and a constant temperature furnace. The supply of electric current to the heating furnace is furnished by changing the capacity of a condenser attached to each of its component parts, and the required amount of current is sent in. As for the conbustion of the sample a regulating apparatus was designed taking into account the mechanism of the thermal decomposition of the sample. This comprises a double automatic regulator, combining a device for automatically changing condensers by a cam mechanism and a control apparatus utilizing the changes in atmospheric pressure in a tube produced by combustion. The constant temperature furnace has an automatically controlled high frequency temperature regulator composed of a special closed chamber, the atmospheric pressure change of which is conveyed to a fluid to register the change of volume of condenser, and this is connected to the power inlet. The results of analyses of standard samples by this method are satisfactory, naming accuracy required for microanalysis, and hence the practical value of the method for elementary analysis is confirmed.

収録刊行物

  • 分析化学

    分析化学 8 (12), 767-773, 1959

    公益社団法人 日本分析化学会

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