有机化合物中氟的微量测定长期以来沿用容量法,其缺点是不符合化学计量和滴定终点不明显。氟离子电极用于有机化合物中氟的测定方法近年来已有一些文献介绍,一般首先将有机氟化物经燃烧分解转化成氟离子,然后应用氟离子电极以电位滴定法或直接电位法进行测定。但这两种方法,或手续繁复,或因磷、砷元素的干扰等因素影响了分析结果的准确度。我们针对上述缺点,建立一种用石英燃烧瓶分解样品和以氟离子电极标准加入法相结合的测定方法。含氟有机样品经燃烧分解后不必转移,即可在分解样品的石英瓶中测得标准氟离子溶液加入前后的 The trace determination of fluorine in organic compounds has long been used volumetric method, the disadvantage is not consistent with stoichiometry and titration endpoint is not obvious. Fluorine ion electrode for the determination of organic compounds in fluorine has been literature in recent years, the general first organic fluoride by combustion decomposition into fluoride ions, and then use fluoride ion electrode potentiometric titration or direct potential method for determination. However, these two methods, or complicated procedures, or due to phosphorus, arsenic interference and other factors affect the accuracy of the analysis results. We address the above shortcomings, the establishment of a quartz flask with a sample of decomposition and fluoride ion electrode standard method of adding a combination of determination. Fluorine-containing organic samples do not have to be decomposed after combustion decomposition, you can in the decomposition of the sample of the quartz bottle measured before and after the addition of standard fluoride solution