标准摘要
[中文适用范围]： 适用于磷含量大于0.0005%（m/m）的产品。 通过与碳酸钠和硼化物或碳酸钠和四硼酸钠的混合物碱熔从测试部分制备溶液。 将冷却的熔融物质溶解在硝酸中并将适当的等分部分调节至pH 2。 形成磷钼复合物并在硫酸介质中用2-甲基丙-1-醇萃取。 在有机相中用稀 (II) 氯化物还原络合物，并在约 730 nm 的波长下对还原的络合物进行分光光度测量。 也得到了 IUPAC 的批准。 [外文原描述]： Applicable to products having phosphorus contents of more than 0.0005 % (m/m). Preparation of a solution from a test portion by alkaline fusion either with a mixture of sodium carbonate and borid or of sodium carbonate and sodium tetraborate. Dissolution of the cooled molten mass in nitric acid and adjustment of an appropriate aliquot portion to pH 2. Formation of a phosphomolybdic complex and extraction by 2-methylpropan-1-ol in a sulphuric acid medium. Reduction of the complex by thin(II) chloride in the organic phase and spectrophotometric measurement of the reduced complex at a wavelength of about 730 nm. Has also been approved by the IUPAC.
英文名称Aluminium oxide primarily used for the production of aluminium — Determination of phosphorus content — Reduced phosphomolybdate spectrophotometric method