| 十八烷基胺对工业氯化铵中铁含量测定的影响及消除 |
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| 引用本文： | 余东辉.十八烷基胺对工业氯化铵中铁含量测定的影响及消除[J].云南化工,1999(3):40-42. |
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| 作者姓名： | 余东辉 |
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| 作者单位： | 云南沾益化肥厂!云南曲靖655038 |
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| 摘 要： | 本方法是用乙醚萃取工业氯化铵样品中的十八烷基胺后，再用邻菲罗啉分光光度法测定样品中的铁含量。测定波长５１０ｎｍ ，络合物在氯化铵环境中１５～７５ｍｉｎ 内可稳定存在，测定极限为０～０ ．２５ｍｇ 铁，空白试验吸光度值为０．００２，回收率９５．０ ％ ～１０６．０％ ，对同一样品进行８ 次平行测定的测定结果相对标准偏差为１．３９ ％ 。
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| 关 键 词： | 工业氯化铵 乙醚 萃取 比色法 |
Eftect of n-Octadecylamine on Determination of Fe 2 in Industrial Grade Ammonium Chloride and Method to Eliminate It |
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| YU Dong-hui.Eftect of n-Octadecylamine on Determination of Fe 2 in Industrial Grade Ammonium Chloride and Method to Eliminate It[J].Yunnan Chemical Technology,1999(3):40-42. |
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| Authors: | YU Dong-hui |
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| Abstract: | n-Octadecylamine was extracted and removed by ether and Fe 2+ in industrial grade ammonium chloride was determined by spectrophotometry at 510 nm wavelength with o-phenethroline as a chromogenic agent.Fe 2+ -o-phenethroline complex was stable within 15～75 min in ammonium chloride solution.The detection limit was 0.25 mg Fe. 2+ Blank absorptivity was 0.002.The recovery of Fe 2+ was 95.0%～106.0%.The relative standard deviation for 8 parallel determinations of the same sample was 1.39%. |
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| Keywords: | industial grade ammonium chloride ether extraction colorimetry |
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