六偏磷酸钠中正磷酸盐的测定方法研究

Study on the Determination of Orthophosphate in Sodium Hexametaphosphate

针对有关于六偏磷酸钠性能的测定,特别是六偏磷酸钠含量的测定通用方法局限于磷钼酸喹啉重量法测定五氧化二磷含量,在这些测量方法中,只讨论了总磷含量和非活性磷含量的测定,并没有涉及正磷酸盐含量的测定等的问题,提出一种六偏磷酸钠中正磷酸盐的测定方法,可解决现有六偏磷酸钠性能测定中的不足,通过测定出六偏磷酸钠中正磷酸盐含量,可以对各种不同品牌的六偏磷酸钠进行评价,或者对生产条件影响六偏磷酸钠进行研究及调控。

In view of the determination of the properties of sodium hexametaphosphate,especially the determination of sodium hexametaphosphate content,the general method is limited to the determination of phosphorus pentoxide content by quinoline phosphomolybdate grata.In these measurement methods,only the determination of total phosphorus content and inactive phosphorus content are discussed,and the determination of orthophosphate content is not involved.A method for the determination of orthophosphate in sodium hexametaphosphate is proposed,which can solve the deficiency in the existing determination of the properties of sodium hexametaphosphate.By determining the content of orthophosphate in sodium hexametaphosphate,various brands of sodium hexametaphosphate can be evaluated,or the influence of production conditions on sodium hexametaphosphate can be studied and regulated.