论文部分内容阅读
氟是磷灰石的重要化学组成之一。磷块岩和磷灰石中氟的测定,对磷灰石类型的鉴定和磷块岩的成因研究有重要意义。 目前,氟的测定方法广泛地采用酸、碱溶(融)样,用蒸馏法进行元素分离。近十几年来,由于离子选择电极法操作方便,被广泛地应用于各种类型物质中氟的测定。离子交换剂可以用来分解某些难溶性的天然和合成材料,但是至今这个方法还未得到广泛地应用。磷酸盐类是难溶性的化合物,这种难溶化合物以悬浊体在水中分布时,固相及
Fluorine is one of the important chemical constituents of apatite. The determination of fluorine in phosphorite and apatite is of great significance for the identification of apatite types and the genesis of phosphorite. At present, the determination of fluorine is widely used acid, alkali soluble (melt) like, the distillation method for elemental separation. Over the past decade, due to the convenient operation of the ion-selective electrode method, it has been widely applied to the determination of fluorine in various types of materials. Ion exchangers can be used to decompose certain insoluble natural and synthetic materials, but so far this method has not been widely used. Phosphates are poorly soluble compounds. When such poorly soluble compounds are distributed in water as a suspension, the solid phase and