| 一种新的催化光度法测定痕量铁 |
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| 引用本文： | 张桂恩,程定玺.一种新的催化光度法测定痕量铁[J].河南师范大学学报(自然科学版),1993,21(2):55-58. |
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| 作者姓名： | 张桂恩 程定玺 |
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| 作者单位： | 河南师范大学化学系，河南师范大学化学系，河南师范大学化学系 |
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| 摘 要： | 本文基于在碱性介质中,活化剂硫氰酸钾存在下,痕量Fe对H_2O_2氧化铬黑T的褪色反应的催化作用建立了一个检出限为3.9×10~(-11)g/ml,线性范围为0.80～31.92ng/ml的催化光度测定铁的新方法。用于人发、水样中痕量铁的测定,R.S.D为1.3～2.0%,回收率为96～98.5%。
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| 关 键 词： | 催化光度法 铬黑T 铁 |
Study on Kinetic Spectrophotometric Determination of Trace Iron |
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| Zhang Gui'en,Cheng Dingxi,Feng Suling.Study on Kinetic Spectrophotometric Determination of Trace Iron[J].Journal of Henan Normal University(Natural Science),1993,21(2):55-58. |
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| Authors: | Zhang Gui'en Cheng Dingxi Feng Suling |
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| Institution: | Zhang Gui'en;Cheng Dingxi;Feng Suling Department of Chemistry |
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| Abstract: | A new catalytic spectrophotometric method has been proposed for determining traceiron.The method is based on the catalytic oxidation of Eriochrome Black T with hydrogen peroxide in thepresence of potassium sulfocyanate as activator,in basic media.The detection limit for iron is0.039ng/ml.The linear range of the determination is 0.8～32ng/ml.The proposed method suffers fromfew interferences in the presence of more than 30 foreign ions.The method has been used to determinetrace iron in hair and water sample.RSD:1.3～2.0%,recovery percent:96～98.5%. |
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| Keywords: | catalytic spectrophotometrie method iron Eriochrome Black T |
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