Chinese Standard: GB/T 3654.2-2008

Ferroniobium—Determination  of copper  content—The  neocuproine-choroform  extraction  photometric method

冶金工业信息标准研究院

本部分规定了用新亚铜灵-三氯甲烷萃取光度法测定铌铁中铜的含量。
本部分适用于铌铁中铜含量的测定。测定范围（质量分数）：0.004 0%～0.18%。

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