有机硫元素分析目前仍多采用氧瓶分解,钡盐为滴定液,吐啉为指示剂的方法。高氟含量的存在将使终点不清,测定值明显偏高。Selig采用离子电极法测定了有机物中硫元素。我们在其工作基础上,改进了溶剂系统及排除氟干扰的方法,建立了高氟含量有机物中疏元素的测定方法。 Organic sulfur element analysis is still more use of oxygen bottle decomposition, barium salt titrant, the method of the indicator for the indicator. The presence of high levels of fluorine will make the endpoint unclear, the measured value was significantly higher. Selig uses the ion-electrode method for the determination of sulfur in organic matter. Based on our work, we improved the solvent system and the method of eliminating fluorine interference, and established the method for the determination of sparse elements in high fluorine content organic matter.