玻碳电极吸附循环伏安法测定植酸含量

Detrmination of phytic Acid by Absorptive Cyclic Voltammetry on The Carbon Electrode

本文阐述一个测定植酸含量的方法。测定结果与光度法相符。测定植酸中总磷和无机磷的变异系数(n=5)分别为0.66％和0.75％;回收率分别为99.7％—100.2％和99.3％—100.8％。在选定的最佳条件下,磷浓度在0.5～50ug/ml范围内与第一氧化峰电流值呈线性,检测线低于0.5ug/ml磷。

A mdehod is described for the determination of phytic acid.The results are satisfactory in comparison with photometry.The coeff.of variative(n=5)were 0.66% and 0.75%,the recovery rates were 99.7—100.2% and 99.3—100.8% for the total phosphorus and the inorganic phosphorus in phytic acid,respectively.Under the optium conditions chosen,the Ist reoxidation peak height is proportional to the P concentration in the range 0.5—50ug/ml,and the Limit of detection is lower than 0.5ug/ml.