标准摘要
[中文适用范围]： 适用于氧化硼含量大于0.0006%（m/m）的产品。 对于足够灵敏的设备，应用的下限可以扩展到 0.00008 % (m/m)。 将测试部分溶解在磷酸中。 通过蒸馏将硼分离为硼酸甲酯。 在 pH 7 下，硼和姜黄素试剂之间形成红色复合物。 在约 550 nm 的波长下对复合物进行分光光度测量。 [外文原描述]： Applicable to products having boron oxide contents of more than 0.0006 % (m/m). With sufficiently sensitive apparatus, the lower limit of application may be extended to 0.00008 % (m/m). The test portion is dissolved in phosphoric acid. Separation of the boron by distillation as methyl borate. Formation of a red coloured complex between the boron and the curcumin reagent at pH 7. Spectrophotometric measurement of the complex at a wavelength of about 550 nm.
英文名称Aluminium oxide primarily used for the production of aluminium — Determination of boron content — Curcumin spectrophotometric method