EDTA-H_2O_2分光光度法测定铝及铝合金中的铁

EDTA-H_2O_2 Spectrophotometric Determination of Iron in the Aluminium and Aluminium Alloy

在pH≥ 10 2的氨性介质中 ,Fe(Ⅲ )与EDTA及H2 O2 形成稳定的紫红色三元配合物 ,铁量在 0～ 0 0 6mg/ml范围内符合比耳定律 。

In the ammoniacal medium and under the condition of pH≥10.2,Fe(Ⅲ) forms a stable violet-red color ternary complex with EDTA H 2O 2. The content of iron in the range of 0-0.06mg/ml obeys the Beer's law.The EDTA-H 2O 2 specteophotometry method can determined iron in the aluminium and aluminium alloy.