有機微量分析に関する研究 (第10報)

有機フッ素分析に関する研究 その3

抄録

When organofluorine compound is burned in apparatus for direct determination of oxygen, a part of silicon tetrafluoride thereby formed was found to be adsorbed on the platinized carbon granules and not all of silicone tetrafluoride flows out during the analytical period. Thermal decomposition of platinized carbon granules, when the layer is shortened, was examined and periodical flow of silicon tetrafluoride during this time was measured by the alternate use of two absorption tubes. It was found that the amount of silicon fluoride remaining on platinized carbon granules was the same and this was not in proportion to the fluorine content in the sample but varied according to the adsorptivity of platinized carbon granules and flow rate of nitrogen gas. Based on these observations, analysis of organofluorine compound was carried out by the combustion method using absorption tube filled with silica gel.