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随着氧化铝多品种的发展 ,高纯氧化铝的需求量日益增大 ,对其纯度的要求也越来越高 ,其中铁的含量是衡量高纯氧化铝等级的重要指标之一 ,痕量铁的测定下限要求为 0 .0 0 0 8%。催化动力学光度法是一种高灵敏度、高选择性的分析方法 ,在铁的测定中已有不少报道[1～ 3 ] ,但用紫?
With the development of many varieties of alumina, the demand of high-purity alumina is increasing day by day, and its purity requirements are also getting higher and higher. The content of iron is one of the important indexes to measure the grade of high-purity alumina. The lower limit of determination of iron is 0.0008%. Catalytic kinetic spectrophotometry is a highly sensitive and highly selective analytical method, many reports have been reported in the determination of iron [1 ~ 3], but purple?