Methods for chemical analysis of zirconium and zirconium alloys—Part 25:Determination of niobium content—2-(5-bromo-2-pyridylazo)-5-diethylam inophenol spectrophotometry and inductively coupled plasma atomic emission spectrometry
全国有色金属标准化技术委员会(SAC/TC 243)
GB/T 13747的本部分规定了锆及锆合金中铌含量的测定方法。
本部分适用于海绵锆、锆及锆合金中铌含量的测定。方法一测定范围：0.20％～3.00％；方法二测定范围：0.050%～3.00%。方法二为仲裁分析方法。
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