Methods for chemical analysis of aluminium and aluminium alloys—Part 2:Determination of arsenic content
全国有色金属标准化技术委员会(SAC/TC 243)
GB/T 20975的本部分规定了铝及铝合金中砷含量的测定方法。
本部分适用于铝及铝合金中砷含量的测定，铝及铝合金中所有共存元素均不干扰砷的测定。方法一测定范围为：＞0.000 5%～0.020%；方法二测定范围为：0.000 002%～0.000 5%。
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