植酸以顺—1、2、35—反—4.6环已六醇六正磷酸的结构存在,是一种天然的多功能添加剂,具有广泛的用途。目前,常用于测定植酸的方法有重量法和沉淀滴定法。重量法测定植酸的结果准确,但在测定前需要对有机物进行破坏,既麻烦又费时。用沉淀滴定法直接滴定植酸,由于沉淀的生成,会影响终点的观察,不易获得准确的结果。当采用返滴定法时,过量的金属离子常被沉淀吸附,並且沉淀条件不同 Phytic acid cis -1,2,35-trans-4.6 cyclohexanal hexa-orthophosphate structure exists, is a natural multi-functional additive, has a wide range of uses. At present, commonly used in the determination of phytic acid gravimetric method and precipitation titration method. Gravimetric determination of phytic acid results accurate, but in the determination of the need for destruction of organic matter, both cumbersome and time-consuming. Titration with precipitation titration phytic acid, due to the formation of precipitation, will affect the end point of observation, not easy to get accurate results. When using the back-titration method, excess metal ions are often precipitated and adsorbed, and the precipitation conditions are different