DIN ISO 7627-2-1991 硬质合金.采用火焰原子吸收光谱法的化学分析.第2部分:含量为 0.001 % - 0.02 % (m/m)(平均克分子)的钙、钾、镁和钠含量的测定; 等同采用 ISO 7627-2:1983
Hardmetals; chemical analysis by flame atomic absorption spectrometry; determination of calcium, potassium, magnesium and sodium in contents from 0,001 to 0,02 % (m/m); identical with ISO 7627-2:1983
The standard specifies the method to be used for the determination of calcium, potassium, magnesium and sodium contents of hardmetals with in the range 0,001 to 0,02 % (m/m) by flame atomic spectrometry.