Chemiluminescence detection of permanganate index(COD_(Mn))by a luminol-KMnO4 based reaction

TIAN Jinjun; HU Yonggang; ZHANG Jie

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Chemiluminescence detection of permanganate index(COD_(Mn))by a luminol-KMnO4 based reaction

机译：Chemiluminescence detection of permanganate index(COD_(Mn))by a luminol-KMnO4 based reaction

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摘要

A novel chemiluminescence(CL)system for determination of permanganate index(COD_(Mn))combined with flow injection analysis has been proposed in this study.On the basis of the chemiluminescent reaction of luminol-KMnO4 system,light emission caused by luminol-KMnO4 system was detected by the photomultiplier tube,and its intensity caused by the appearance of KMnO4 after sample digestion was inversely proportional to COD_(Mn).Effects for COD_(MN)determining such as pH,concentrations and interference were investigated in detail.A detection limit of 0.3 mg/L COD_(MN)with a linear range of 0.3-200 mg/L for its theoretical COD_(MN)was obtained under the optimized experimental conditions.The relative standard deviation was 4.3% for 5.0 mg/L COD_(Mn)(n = 11).This CL flow System for determining COD_(Mn)was simple,rapid,and suitable for automatic analysis.The data obtained by the present method were fairly in good agreement with those obtained by the standard titrimetric method.It has been applied to determine real samples with satisfactory results.

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来源
《Journal of environmental sciences》 |2008年第2期|252-256|共5页
作者
TIAN Jinjun; HU Yonggang; ZHANG Jie;
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作者单位

College of Environmental Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China.;

Nanyang Institute of Technology,Nanyang 473004,China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类环境与环境系统;
关键词
flow-injection; chemiluminescence; permanganate index(COD_(Mn)); luminol-KMnO4;

Chemiluminescence detection of permanganate index(COD_(Mn))by a luminol-KMnO4 based reaction

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