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介绍了磷钼杂多酸修饰电极，用于肥料中磷的测定方法。测定结果与光度法和重量法相符，以测定肥料中总磷为例，相对标准偏差（ｎ＝６）为２．０６％，回收率分别为９７．６％—１０２．０６。在选定的最佳条件下，磷（Ｐ）的浓度在０．０５—３０μｇ／ｍｌ范围内与第一氧化峰呈线性，检测线低于０．０５μｇ／ｍｌ的Ｐ．
The phosphomolybdic heteropoly acid modified electrode was introduced for the determination of phosphorus in fertilizers. The determination results are consistent with the spectrophotometry and gravimetric method. Taking the determination of total phosphorus in fertilizer as an example, the relative standard deviation (n = 6) was 2.06% and the recovery rates were 97.6% -102.06 respectively. Under the optimal conditions, the concentration of phosphorus (P) was linear with the first oxidation peak in the range of 0.05-30μg / ml and the detection line was lower than 0.05μg / ml.