Methods for chemical analysis of aluminium and aluminium alloys—Part 10:Determination of tin content
全国有色金属标准化技术委员会(SAC/TC 243)
GB/T 20975的本部分规定了苯基荧光酮分光光度法和碘酸钾滴定法测定铝及铝合金中锡含量。
本部分适用于铝及铝合金中锡含量的仲裁测定。苯基荧光酮分光光度法测定范围：0.005 0%～2.00%；碘酸钾滴定法测定范围：0.35%～55.00%。
本部分中苯基荧光酮分光光度法不适用于铋质量分数＞0.20%或镁质量分数＞4.0%铝合金的测定。
注： 锡质量分数为＞0.35%～2.00%时，采用碘酸钾滴定法为仲裁方法。
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