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在测定含氟有机化合物中碳、氢时,由于C—F键的稳定性,需用高温灼烧或复盖氧化剂来进行分解。但如不除去所生成的含氟分解产物,就会给碳、氢测定带来误差。为了消除这种干扰,多年来微量分析工作者进行了大量的研究。有的建议用各种内吸收剂,有的则提出使用外吸收剂来除去含氟分解产物。这些方法各有特点,都能有效地排除氟对碳、氢测定的干扰。然而,值得讨论的是:有的作者认为氟分解产物中的四氟化硅进入二氧化碳吸收管
Fluorine-containing organic compounds in the determination of carbon, hydrogen, due to the stability of the C-F bond, the need to use high temperature burning or covering the oxidant decomposition. However, if you do not remove the resulting fluorine-containing decomposition products, it will give carbon, hydrogen measurement error. In order to eliminate this interference, microanalysis workers have done a lot of research over the years. Some suggest using a variety of internal absorbents, while others have proposed the use of external absorbents to remove fluorine-containing decomposition products. These methods have their own characteristics, can effectively rule out the interference of fluorine on carbon and hydrogen determination. However, it is worth discussing that some authors believe that silicon tetrafluoride in the fluorine decomposition products enters the carbon dioxide absorption tube