| 释放螯合滴定法测定钼铁中的铁含量 |
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| 引用本文： | 王献科,李玉萍,李莉芬. 释放螯合滴定法测定钼铁中的铁含量[J]. 中国钼业, 2000, 24(1): 38-40 |
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| 作者姓名： | 王献科 李玉萍 李莉芬 |
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| 作者单位： | 兰州市东岗镇钢厂兰州730020 |
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| 摘 要： | 用ＮＨ４ＳＣＮ、（Ｃ４Ｈ９）４ＮＣＩ为释放剂,选择性螯合一法测定钼铁中的铁。先用ＥＤＴＡ合Ｆｅ＾３＋和其他阳离子,然后加入ＮＨ５ＳＣＮ和（Ｃ４Ｈ９）４ＮＣＩ,分解Ｆｅ－ＥＤＴＡ螯合物、释放出的ＥＤＴＡ,用Ｉｎ（ＮＯ３）３标准溶液返滴定,而Ｆｅ＾３＋形成〖（Ｃ４Ｈ９）４Ｎ〗３〖Ｆｅ（ＳＣＮ）６】缔合物。实验结果表明,一般常见阳离子完全不干扰测定铁,该法已成功地用于测铁中的铁含量。
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| 关 键 词： | 铁 钼铁 释放剂 螯合滴定法 测定 |
| 修稿时间： | 1999-06-19 |
RELEASED CHELATOMETRY DETERMINATION OF IRON IN FERROMOIYBD- ENUM |
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| Wang Xianke Li Yuping Li Lifen. RELEASED CHELATOMETRY DETERMINATION OF IRON IN FERROMOIYBD- ENUM[J]. China Molybdenum Industry, 2000, 24(1): 38-40 |
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| Authors: | Wang Xianke Li Yuping Li Lifen |
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| Abstract: | The NH 4SCN and (C 4H 9) 4NCl is used as releasing agent for the determination of iron in ferromolybdenum with selective chelatometry.Fe 3 and other cations are chelated by EDTA,NH 4SCN and (C 4H 9) 4NCl is then added to decompose the Fe-EDTA chelates and the liberated EDTA is back-titrated with In(NO 3) 3 standard the Fe 3 forms a [(C 4H 9) 4N] 3[Fe(SCN) 6] association compound.Experimental results show that the cation has no influence to interference of iron.This method has been successfully applied to determination of iron content in ferromolybdenum. |
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| Keywords: | Iron Ferromolybdenum Releasing agent Chelatometry |
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