本部分规定了采用火焰原子吸收光谱法和Na2EDTA滴定法测定铝及铝合金中钙含量。 本部分适用于铝及铝合金中钙含量的仲裁测定。火焰原子吸收光谱法测定范围：0.010%~1.00%；Na2EDTA滴定法测定范围：4.00%~30.00%。

本文件描述了镁及镁合金中铝、铁、铜、锰、镍、铅、锡、钛、锌、锆、银、砷、铍、钙、镉、铬、钾、锂、钠、锑、锶、镧、铈、镨、钕、钆、钇、铒、镝和镱含量的测定方法。 本文件适用于镁及镁合金中铝、铁、铜、锰、镍、铅、锡、钛、锌、锆、银、砷、铍、钙、镉、铬、钾、锂、钠、锑、锶、镧、铈、镨、钕、钆、钇、铒、镝和

GB/T 20975.25-2020.Methods for chemical analysis of aluminium and aluminium alloys-Part 25: Determination of elements content-Inductively coupled plas

GB/T 20975.35-2020.Methods for chemical analysis of aluminium and aluminium alloys-Part 35: Determination of tungsten content-Thiocyanate spectrophoto

GB/T 20975.12-2020.Methods for chemical analysis of aluminium and aluminium alloys一Part 12 : Determination of titanium content. 1范围 GB/T 20975的本部分规定了二

GB/T 20975.3-2020.Methods for chemical analysis of aluminium and aluminium alloys-Part 3 :Determination of copper content. 1范围 GB/T 20975的本部分规定了新亚铜灵分光

GB/T 20975.18-2020.Methods for chemical analysis of aluminium and aluminium alloys-Part 18 : Determination of chromium content. 1范围 GB/T 20975的本部分规定了萃

GB/T 20975.36-2020.Methods for chemical analysis of aluminium and aluminium alloys-Part 36 : Determination of silver content-Flame atomic absorption s

GB/T 20975.37-2020.Methods for chemical analysis of aluminium and aluminium alloys-Part 37 : Determination of niobium content. 1范围 GB/T 20975的本部分规定了纸上

GB/T 20975.15-2020.Methods for chemical analysis of aluminium and aluminium alloys-Part 15 : Determination of boron content. 1范围 GB/T 20975的本部分规定了氢氟酸溶