ISO 1617:1976 主要用于制铝的氧化铝.钠含量的测定.火焰发射分光光度法

标准编号：ISO 1617:1976

中文名称：主要用于制铝的氧化铝.钠含量的测定.火焰发射分光光度法

英文名称：Aluminium oxide primarily used for the production of aluminium — Determination of sodium content — Flame emission spectrophotometric method

发布日期：1976-09

标准范围

本方法适用于钠含量等于或大于0.05%（m/m）的情况。该程序的原理在于，在受控温度下，将试样与碳酸锂和三氧化硼的混合物或碳酸锂和四硼酸锂的混合物熔融。熔融物在盐酸中的溶解。将溶液吸入火焰并用分光光度法测量589 nm波长下发出的光的强度。-取代ISO建议R 1617-1970。

The method is applicable to sodium contents equal to or greater than 0.05 % (m/m). The principle of the procedure consists in the fusion, at a controlled temperature, of a test portion with a mixture oflithium carbonate and boron trioxide or a mixture of lithium carbonate and lithium tetraborate. Dissolution of the fused mass in hydrochloric acid. Aspiration of the solution into a flame and spectrophotometric measurement of the intensity of the light emitted at a wavelength of 589 nm. - Replaces ISO Recommendation R 1617-1970.

标准预览图