| Kinetic Spectrophotometric Determination of Trace Iron（Ⅲ）with p—Amino—N,N—Dimethylaniline Dihydrochloride and Hydrogen Peroxide |
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| 摘 要： |
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| 关 键 词： | 示踪离子 分光光度学 环境 有机物 三价铁离子 N－二甲基苯胺 |
Kinetic spectrophotometric determination of trace iron (III) withp-amino-N,N-dimethylaniline dihydrochloride and hydrogen peroxide |
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| Yu Deshun,Liu Shaopu,Liu Zhongfang,Liu Kaixiang. Kinetic spectrophotometric determination of trace iron (III) withp-amino-N,N-dimethylaniline dihydrochloride and hydrogen peroxide[J]. Chinese Journal of Geochemistry, 1995, 14(2): 134-139. DOI: 10.1007/BF02873296 |
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| Authors: | Yu Deshun Liu Shaopu Liu Zhongfang Liu Kaixiang |
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| Affiliation: | (1) Institute of Geochemistry, Chinese Academy of Sciences, 550002 Guiyang;(2) Institute of Environmental Chemistry, Southwest Normal University, 630007 Beibei |
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| Abstract: | A new, simple and highly sensitive kinetic method for the determination of trace iron (III) has been developed based on the catalytic effect of iron (III) on color reaction ofp-amino-N, N-dimethylaniline dihydrochloride (p-DMA) oxidated by hydrogen peroxide. The reaction is followed spectrophotometrically by measuring the absorbance at 510 nm. The detection limit is 4.47×10−11 g/ml, and the calibration curve is linear in the range of 0–0.10μg Fe(III) /25 ml with a relative standard deviation of ±3.25%. The method has been applied to the determination of iron in tap-water, chemical reagents and human hair. |
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| Keywords: | iron determination p-amino-N p-amino-N, N-dimethylaniline kinetic spectrophotometry |
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