ISO 7530-7:1992 镍合金.火焰原子吸收光谱分析.第7部分：铝含量测定

标准编号：ISO 7530-7:1992

中文名称：镍合金.火焰原子吸收光谱分析.第7部分：铝含量测定

英文名称：Nickel alloys — Flame atomic absorption spectrometric analysis — Part 7: Determination of aluminium content

发布日期：1992-09

标准范围

硅含量可在0.2%（m/m）至1%（m/m）范围内测定。其原理是将试验部分溶解在酸中，将试验溶液过滤并吸入原子吸收光谱仪的一氧化二氮乙炔火焰中，燃烧过滤器，挥发二氧化硅，熔合残渣，溶解稀酸中的熔体，将第二种溶液吸入另一种火焰中，测量铝光谱中共振线能量的吸光度，并与309,3 nm处校准溶液的吸光度进行比较。

Silicon content can be determined in the range of 0,2 % (m/m) to 1 % (m/m). The principle is dissolution of a test portion in acid, filtration and aspiration of the test solution into a nitrous oxide-acetylene flame of an atomic absorption spectrometer, combustion of the filter, volatilization of silica, fusion of the residue, dissolution of the melt in dilute acid, aspiration of this second solution into another such flame, measurement of the absorbance of the resonance line energy from the spectrum of aluminium and comparison with that of calibration solutions at 309,3 nm.

标准预览图