| 高氯酸氧化-亚铁滴定法快速测定硅铁合金中铬 |
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| 引用本文： | 马玉香,黄会芹,张利军. 高氯酸氧化-亚铁滴定法快速测定硅铁合金中铬[J]. 山东冶金, 2006, 28(5): 42-43 |
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| 作者姓名： | 马玉香 黄会芹 张利军 |
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| 作者单位： | 莱芜钢铁股份有限公司,品质保证部,山东,莱芜,271104;莱芜钢铁股份有限公司,品质保证部,山东,莱芜,271104;莱芜钢铁股份有限公司,品质保证部,山东,莱芜,271104 |
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| 摘 要： | 试样以硝酸、氢氟酸溶解,加高氯酸冒烟驱除硅和氟,并将铬氧化为六价,在硫磷混合酸介质中,以N-苯代邻氨基苯甲酸为指示剂,用硫酸亚铁铵标准溶液滴定铬。方法具有操作简便、快速、结果准确的特点。
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| 关 键 词： | 硅铁合金 高氯酸氧化 亚铁滴定法 铬 |
| 文章编号： | 1004-4620(2006)05-0042-02 |
| 收稿时间： | 2006-06-13 |
| 修稿时间： | 2006-06-13 |
Fast Determination of Chromium Content in Ferrosilicon Alloy by Perchloric-acid-oxidation Ferrous-iron-titrimetric-Method |
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| MA Yu-xiang,HUANG Hui-qin,ZHANG Li-jun. Fast Determination of Chromium Content in Ferrosilicon Alloy by Perchloric-acid-oxidation Ferrous-iron-titrimetric-Method[J]. Shandong Metallurgy, 2006, 28(5): 42-43 |
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| Authors: | MA Yu-xiang HUANG Hui-qin ZHANG Li-jun |
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| Affiliation: | The Quality Department of Laiwu Iron and Steel Co.,Ltd., Laiwu 271104, China |
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| Abstract: | The sample is dissolved by nitric acid and hydrofluoric acid and then perchloric acid is added to make smoke rise to remove silicon and fluorine and oxidize chromium into hexad.In medium of mixed sulphuric acid and phosphoric acid,with N-phenylated anthranilic acid as a tracer agent,the standard solution of ammonium ferrous sulphate is used to titrate chromium.The method has the characteristics of being easy to operate,fast and accurate. |
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| Keywords: | ferrosilicon alloy perchloric acid oxidation ferrous-iron-titrimetric method |
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