| 间硝基苯基荧光酮褪色光度法测定痕量铁 |
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| 引用本文： | 颜苹菲.间硝基苯基荧光酮褪色光度法测定痕量铁[J].企业技术开发,2004,23(3):21-22,27. |
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| 作者姓名： | 颜苹菲 |
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| 作者单位： | 襄樊学院化学化工系 湖北襄樊441053 |
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| 摘 要： | 基于稀H2SO4介质中,痕量铁(Ⅲ)对KBrO3氧化间硝基苯基荧光酮有催化作用,建立了催化褪色光度法测定痕量铁的新方法。试验表明,利用此褪色光度法测定痕量铁(Ⅲ),其灵敏度较高,间接摩尔吸光系数为1.53×106l/(mol·cm),线性范围为0～5ug/25mlFeⅢ,方法简便、快捷、灵敏度高,用于自来水及井水中痕量铁的测定,结果令人满意。
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| 关 键 词： | 铁 褪色光度法 间硝基苯基荧光酮 |
| 文章编号： | 1006-8937(2004)03-0021-02 |
Department of traces of iron by catalytic kinetic photometry with m-NPF |
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| YAN Ping-fei.Department of traces of iron by catalytic kinetic photometry with m-NPF[J].Technological Development of Enterprise,2004,23(3):21-22,27. |
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| Authors: | YAN Ping-fei |
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| Abstract: | It is found that in a dilute H2SO4 medium, the oxidation of 2,3,7-Trihydroxy-9-(m-nitrophenyl)fluorone carmine by postassium nitrate is catalyzed by trace amounts of Iron(III). Based on this phenomenon, a sensitive method for the determination of traces of iron is reported. A linear relationship between the decrease in absorbance for 1.53×106l per mol·cm and the rate of is found in the concentration range of 0～5 ug of Iron(III) per 25 ml of soulution. The proposed method has been used in the analysis of tap water and well water. |
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| Keywords: | Iron(III) Catalytic Photometry m-NPF |
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