采用小体积分离法使共存的铁、钛、锆等呈沉淀而分离除去，以消除其干扰，再用氟盐取代EDTA滴定法，测定了硅铁中的三氧化二铝，该方法较原标准方法简单，步骤少，精度好，成本低，测定范围较宽等优点。
A method based on separated the interfering elements in strong base medium for the determination of aluminum oxide in ferrosilicon is proposed. This method is simple，rapid and accurate.It has been used to determine aluminium oxide in ferrosilicon with satisfactory results.
参考文献
| [1] | GB 4333.5-1984.GB 4333.5-1984[S]. |
| [2] | 北京矿冶研究总院分析室.矿石及有色金属分析手册[M].北京:冶金工业出版社,1990 |
| [3] | 《矿石矿物分析》编写组.矿石矿物分析[M].北京:地质出版社,1991 |
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