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

标准号：ISO 7530-7-1992
中文标准名称：镍合金 火焰原子吸收光谱法 第7部分:铝含量测定
英文标准名称：Nickel alloys; flame atomic absorption spectrometric analysis; part 7: determination of aluminium content
标准类型：H62
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：H62
国际标准分类号：77.120.40
适用范围：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.