| 螯合剂铁螯合值测定方法比较 |
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| 引用本文： | 洪焱根,王魁,冯彬,马俊,栾志乾.螯合剂铁螯合值测定方法比较[J].造纸化学品,2010,22(3):16-18. |
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| 作者姓名： | 洪焱根 王魁 冯彬 马俊 栾志乾 |
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| 作者单位： | 黎明化工研究院,河南,洛阳,471001 |
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| 摘 要： | 采用络合滴定法、Fe(OH)_3沉淀法和碘量法等3种方法测定螯合剂EDTA的铁螯合值,并对测试结果和操作过程进行比较。结果表明,络合滴定法相对标准偏差最小,精度最高,操作简单、方便,且不受放置时间、溶液本身颜色的影响。故测定螯合剂铁螯合值时选用此法为宜。
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| 关 键 词： | 络合滴定法 Fe（OH）3沉淀法 碘量法 铁螯合值 |
Test Methods of Iron Chelating Capacity of Chelating Agents and Comparison Thereof |
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| HONG Yan-gen,WANG Kui,FENG Bin,MA Jun,LUAN Zhi-qian.Test Methods of Iron Chelating Capacity of Chelating Agents and Comparison Thereof[J].Paper Chemicals,2010,22(3):16-18. |
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| Authors: | HONG Yan-gen WANG Kui FENG Bin MA Jun LUAN Zhi-qian |
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| Affiliation: | HONG Yan-gen,WANG Kui,FENG Bin,MA Jun,LUAN Zhi-qan (Liming Research Insitute of Chemcial Industry,Luoyang 471001,China) |
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| Abstract: | Three methods,including complexometric titration method,ferric hydroxide sedimentation method and iodometric method,were used to determine iron chelating capacity of chelating agent EDTA.The results and operational process were compared.It was revealed that the complexometric titration method had the minimal relative standard deviation and the highest accuracy.It was easy to carry out,and was not influenced by the standing time and sample color.Thus,it was the most appropriate method to determine iron chelating capacity of chelating agents. |
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| Keywords: | complexometric titration method ferric hydroxide sedimentation method iodometric method iron chelating capacity |
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