| 极谱法测定饲料添加剂中游离亚铁离子 |
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| 引用本文： | 韦梅生,张小麟. 极谱法测定饲料添加剂中游离亚铁离子[J]. 河南工业大学学报(自然科学版), 1999, 20(2) |
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| 作者姓名： | 韦梅生 张小麟 |
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| 作者单位： | 郑州粮食学院 |
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| 摘 要： | 研究了极谱法测定饲料添加剂中游离亚铁离子含量的方法。在柠檬酸铵溶液（ｐＨ９１）中，Ｆｅ２＋与４－（２－吡啶偶氮）间苯二酚（ＰＡＲ）形成的络合物产生一灵敏还原吸附波，可用于单扫描示波极谱法测定微量铁（Ⅱ）。铁（Ⅱ）浓度在１０×１０－８～１０×１０－６ｍｏｌ·Ｌ－１浓度范围内与导数波高呈线性关系，检测下限为７５×１０－９ｍｏｌ·Ｌ－１。该法应用于测定饲料添加剂氨基酸螯合亚铁中的游离亚铁离子，并用多种电化学手段对络合物的电化学性质进行了研究
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| 关 键 词： | 饲料添加剂；游离亚铁离子；单扫描示波极谱法 |
STUDY ON THE DETERMINATION OF FREE FERROUS IRON IN FEEDADDITIVES BY THE OSCILLOPOLAROGRAPHY |
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| Wei MeishengZhang Xiaolin. STUDY ON THE DETERMINATION OF FREE FERROUS IRON IN FEEDADDITIVES BY THE OSCILLOPOLAROGRAPHY[J]. Journal of Henan University of Technology Natural Science Edition, 1999, 20(2) |
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| Authors: | Wei MeishengZhang Xiaolin |
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| Affiliation: | Wei Meisheng1Zhang Xiaolin2 |
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| Abstract: | In 4.0% ammonium citrate(pH9.1)medium,a sensitive adsorptive wave of the complex of ferrous iron with 4(2pyridylazo)resorcinol(PAR)is obtained by using singlesweep oscillopolargraphy.The peak height of derivative wave is linear with the concentration of Fe() over the range 1.010-8mol.L-1,and the detection limit is 7.510-9mol.L-1This method has been applied satisfactorily to the determination of Fe() in amino acid chelating ironfeed additives.The characteristics of the wave have been studied. |
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| Keywords: | feed additive free ferrous iron singlesweep oscillopolargraphy |
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