| EDTA滴定法测定萤石中的CaF2 |
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| 引用本文： | 冯莉. EDTA滴定法测定萤石中的CaF2[J]. 贵州化工, 2003, 28(4): 29-30 |
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| 作者姓名： | 冯莉 |
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| 作者单位： | 中南冶金地质研究所,湖北,宜昌,443003 |
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| 摘 要： | 介绍一个快速测定萤石中CaF2的方法。试样中的碳酸盐经10％HAC选择溶解后，残渣用HNO3-HClO4分解，冒HClO4烟除氟。在pH5～6条件下，用六次甲基四胺-铜试剂进行沉淀分离，钙在pHl2．5用EDTA滴定。
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| 关 键 词： | EDTA滴定法 测定 萤石 CaF2 EDTA滴定 六次甲基四胺-铜试剂 沉淀分离 |
| 文章编号： | 1008-9411(2003)04-0029-02 |
| 修稿时间： | 2003-04-09 |
Determination of CaF2 in the Fluorite by EDTA Titrimetry |
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| Feng Li. Determination of CaF2 in the Fluorite by EDTA Titrimetry[J]. Guizhou Chemical Industry, 2003, 28(4): 29-30 |
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| Authors: | Feng Li |
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| Abstract: | A rapid method for the dtermination of Cap2 in the fluorite was presented. After carbonate of the sample selective was dissolved with 10% acetic acid. The residue was decomposed with nitric acid and perchloric acid. The interference of fluor in the certain range could be eliminated, in the solution of hexamethylene tetramine - sodium diethyidithio carbamate precipitation was separated at pH 5 - 6. Calcium was titrated with EDTA at pH 12.5. |
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| Keywords: | Carbonate separate EDTA titrimetry |
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