| 动力学光度法测定痕量氨三乙酸 |
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| 引用本文： | 黄天利,郭利兵,张海洋.动力学光度法测定痕量氨三乙酸[J].河南科学,2008,26(6):665-667. |
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| 作者姓名： | 黄天利 郭利兵 张海洋 |
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| 作者单位： | 1. 焦作师范学院,河南,焦作,454000
2. 河南化学研究所,郑州,450002 |
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| 摘 要： | 在乙酸介质中,微量氨三乙酸对高碘酸钾氧化玫瑰桃红R的反应有显著的抑制作用,据此建立了阻抑动力学光度法测定氨三乙酸的新方法,方法的线性范围为0.01～0.12μg/mL,检出限达到2.3×10-3μg/mL,是目前测定氨三乙酸最灵敏的动力学方法.本法简便快速,灵敏度高,用于合成样品和实验室废水中痕量氨三乙酸的测定,结果满意.
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| 关 键 词： | 阻抑催化动力学光度法 玫瑰桃红R 氨三乙酸 |
| 文章编号： | 1004-3918(2008)06-0665-03 |
| 修稿时间： | 2008年2月27日 |
Determination of Trace Nitrilotriacetic Acid with the Kinetics Photometry Method |
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| Huang Tianli,Guo Libing,Zhang Haiyang.Determination of Trace Nitrilotriacetic Acid with the Kinetics Photometry Method[J].Henan Science,2008,26(6):665-667. |
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| Authors: | Huang Tianli Guo Libing Zhang Haiyang |
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| Institution: | Huang Tianli1,Guo Libing2,Zhang Haiyang2(1.Jiaozuo Teachers College,Jiaozuo 454000,Henan China,2.Henan Institute of Chemistry,Zhengzhou 450002,China) |
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| Abstract: | The spectrophotometric method of inhibitory kinetics for the determination of trace nitrilotriacetic acid has been established,based on the inhibitory effect of rose pink R on the decolorization by the oxidation of potassium periodate.The optimum condition and kinetic parameters of this reaction were studied in detail.The calibration graph is rectilinear from 0.01～0.12 μg / mL and the detection limit is 2.3×10-3 μg / mL.It was applied satisfactorily to the determination of trace nitrilotriacetic acid in in tap water and wastewater in experimental laboratory. |
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| Keywords: | inhibitory kinetics spectrophotometry rose pink R nitrilotriacetic acid |
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