无机肥料中有效磷含量的测定国际标准制定研究

Determination of available phosphorus in inorganic fertilizers and development of related international standard

为统一全球无机肥料中有效磷含量的测定方法,对国际上现有的3种主要检测方法进行了分析研究,比较了我国现行仲裁方法(GB/T 8573)、欧盟标准方法(EN 15959)以及传统国际标准方法(ISO 6598)的差异性,研究表明上述3种方法对测定结果没有显著差异。ISO/TC 134推荐了以GB/T 8573为基础,制订新国际标准ISO/DIS 22018,该新标准草案通过国际实验室间比对,验证了GB/T 8573分析方法适用性广、精密度高,是一种较好的通用测定方法,可作为新的国际标准推广使用。

In order to unify the determination method of available phosphorus in inorganic fertilizers globally,three existing methods are reviewed and studied.Chinese standard method for arbitration(GB/T 8573),the method of EU standard(EN 15959),and the method of traditional international standard(ISO 6598)are compared.The results show that there is no significant difference on the test results among these three methods.The method of GB/T 8573 is recommended by ISO/TC 134 as the basis for the new international standard of ISO/DIS 22018.An international ring comparison test has been conducted according to the ISO/DIS 22018,verifying the wide applicability and high precision of the GB/T 8573 omalytical method,and is a good testing method which can be used world-widely.