Kinetic Spectrophotometric Determination of Trace Iron（Ⅲ）with p—Amino—N,N—Dimethylaniline Dihydrochloride and Hydrogen Peroxide Kinetic spectrophotometric determination of trace iron (III) withp-amino-N,N-dimethylaniline dihydrochloride and hydrogen peroxide期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Kinetic Spectrophotometric Determination of Trace Iron（Ⅲ）with p—Amino—N,N—Dimethylaniline Dihydrochloride and Hydrogen Peroxide

摘要：
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

Authors:	Yu Deshun Liu Shaopu Liu Zhongfang Liu Kaixiang

Institution:	(1) Institute of Geochemistry, Chinese Academy of Sciences, 550002 Guiyang;(2) Institute of Environmental Chemistry, Southwest Normal University, 630007 Beibei

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.

Keywords:	iron determination p-amino-N p-amino-N N-dimethylaniline kinetic spectrophotometry
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