| 硫氰酸钠光度法测定LiFePO4中的铁 |
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| 引用本文： | 钟国秀,杨浩义,卢钒. 硫氰酸钠光度法测定LiFePO4中的铁[J]. 化学分析计量, 2011, 20(4): 63-64 |
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| 作者姓名： | 钟国秀 杨浩义 卢钒 |
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| 作者单位： | 湖北省机电研究设计院,武汉,430070 |
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| 摘 要： | 研究了硫氰酸钠与铁的显色反应,在pH 1.5左右的酸度下,铁与硫氰酸钠反应形成红色络合物,最大吸收波长为480nm,表观摩尔吸光系数为7.56×103 L/(mol·cm).铁含量在300 ～800μg/(100 mL)范围内符合比耳定律.方法用于LiFePO4中铁的直接测定,测定结果的相对标准偏差为0.8% ～1.7...
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| 关 键 词： | 硫氰酸钠 铁 LiFePO4 分光光度法 |
DETERMINATION OF IRON IN LiFePO_4 BY SODIUM THIOCYANATE-SPECTROPHOTOMETRY |
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| Zhong Guoxiu,Yang Haoyi,Lu Fan. DETERMINATION OF IRON IN LiFePO_4 BY SODIUM THIOCYANATE-SPECTROPHOTOMETRY[J]. Chemical Analysis And Meterage, 2011, 20(4): 63-64 |
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| Authors: | Zhong Guoxiu Yang Haoyi Lu Fan |
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| Affiliation: | Zhong Guoxiu,Yang Haoyi,Lu Fan(Hubei Research & Designing Institute of Mechanical Electronic Engineering,Wuhan 430070,China) |
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| Abstract: | The chromogenic reaction between the sodium thiocyanate and iron was studied. In the medium of pH 1.5 solution, iron reacted with the sodium thiocyanate to form a red complex which exhibited maximum absorption at 480 nm with a apparent molar absorptivity of 7.56 × 10^3 L/（ mol · cm）. Beer＇s law was obeyed in the range of 300 - 800μg/（ 100 mL）. The proposed method was applied to the determination of iron in LiFePO4 with RSD of 0.8% -1.7% （n = 5） and recovery of 98.2% -101.9%. |
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| Keywords: | sodium thiocyanate iron LiFePO4 spectrophotometry |
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