ISO 10697-2:1994 钢.用火焰原子吸收光谱法测定钙.第2部分：钙的总含量的测定

标准编号：ISO 10697-2:1994

中文名称：钢.用火焰原子吸收光谱法测定钙.第2部分：钙的总含量的测定

英文名称：Steel — Determination of calcium content by flame atomic absorption spectrometry — Part 2: Determination of total calcium content

发布日期：1994-02

标准范围

规定方法的原理是将试样溶解在盐酸和硝酸中，将酸不溶性残留物与碳酸钠熔融，添加氯化钾/硝酸镧溶液作为光谱化学缓冲液，将溶液喷洒到一氧化二氮乙炔火焰中，光谱测量钙空心阴极灯发射的422,7 nm光谱线的原子吸收。该方法适用于钙含量在00005%（m/m）和0005%（m/m）之间的情况。

The principle of the method specified is dissolving a test portion in hydrochloric and nitric acids, fusing the acid-insoluble residue with sodium carbonate, adding potassium chloride/lanthanum nitrate solution as a spectrochemical buffer, spraying the solution into a dinitrogen monoxide-acetylen flame, and spectrometrically measuring the atomic absorption of the 422,7 nm spectral line emitted by a calcium hollow cathode lamp. The method is applicable to calcium contents betwen 0,0005 % (m/m) and 0,005 % (m/m).

标准预览图