本国际标准规定了测定土壤中磷含量的光谱测定方法 动物饲料。 本方法适用于磷含量低于50g/kg的动物饲料。尤其是 适用于低磷产品的分析。对于磷含量较高的产品， 建议使用重量分析法，例如使用喹啉磷钼酸盐。

This International Standard specifies a spectrometric method for the determination of the phosphorus content of animal feeding stuffs. The method is applicable to animal feeding stuffs with a phosphorus content less than 50 g/kg. It is particularly appropriate for the analysis of products with low phosphorus content. For products with higher phosphorus content, application of a gravimetric method is advised, using for instance quinoline phosphomolybdate.