ISO 3390:1976 主要用于制铝的氧化铝.锰含量的测定.火焰原子吸收法

标准编号：ISO 3390:1976

中文名称：主要用于制铝的氧化铝.锰含量的测定.火焰原子吸收法

英文名称：Aluminium oxide primarily used for the production of aluminium — Determination of manganese content — Flame atomic absorption method

发布日期：1976-09

标准范围

适用于锰含量在0.0002%（m/m）和0.005%（m/m）之间的产品。如果可用的仪器没有足够的灵敏度，则采用附录中规定的方法进行初步提取。描述了在控制温度为250°C的条件下，在密封硼硅酸盐玻璃管中用盐酸加热试样的溶解。在空气-乙炔火焰中吸入溶液，并用分光光度法测量锰空心阴极灯发出的279.5-nm线的吸收。

Applicable to products having a Mn content between 0.0002 % (m/m) and 0.005 % (m/m). Preliminary extraction by the method specified in the annex if the apparatus available does not have a sufficient sensitivity. Describes the dissolution of a test sample by heating in a sealed borosilicate glass tube with hydrochloric acid at a controlled temperature of 250 °C. Aspiration of the solution in an air-acetylene flame and spectrophotometric measurement of the absorption of the 279.5-nm line emitted by a manganese hollow cathode lamp.

标准预览图