| Chemiluminescence detection of permanganate index （CODMn） by a luminol-KMnO4 based reaction |
| |
| 作者姓名： | TIAN Jinjun HU Yonggang ZHANG Jie |
| |
| 作者单位： | [1]College of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China [2]Nanyang Institute of Technology, Nanyang 473004, China |
| |
| 基金项目： | 国家自然科学基金,湖北省武汉市青年科技晨光计划 |
| |
| 摘 要： | A novel chemiluminescence （CL） system for determination of permanganate index （CODMn） 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 CODMn. Effects for CODMn determining such as pH, concentrations and interference were investigated in detail. A detection limit of 0.3 mg/L CODMn with a linear range of 0.3-200 mg/L for its theoretical CODMn was obtained under the optimized experimental conditions. The relative standard deviation was 4.3% for 5.0 mg/L CODMn （n = 11）. This CL flow system for determining CODMn 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.
|
| 关 键 词： | 化学发光法 高锰酸钾 发光氨 水质监测 |
| 收稿时间： | 2007-03-04 |
| 修稿时间： | 2007-04-19 |
Chemiluminescence detection of permanganate index (CODMn) by a
luminol-KMnO4 based reaction |
| |
| TIAN Jinjun,HU Yonggang,ZHANG Jie.Chemiluminescence detection of permanganate index (CODMn) by a
luminol-KMnO4 based reaction[J].Journal of Environmental Sciences,2008,20(2):252-256. |
| |
| Authors: | TIAN Jinjun HU Yonggang and ZHANG Jie |
| |
| Institution: | 1. College of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;Nanyang Institute of Technology, Nanyang 473004, China
2. College of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China |
| |
| Abstract: | A novel chemiluminescence (CL) system for determination of permanganate index (CODMn) 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 CODMn. Effects for CODMn determining such as pH, concentrations and interference were investigated in detail. A detection limit of 0.3 mg/L CODMn with a linear range of 0.3-200 mg/L for its theoretical CODMn was obtained under the optimized experimental conditions. The relative standard deviation was 4.3% for 5.0 mg/L CODMn (n = 11). This CL flow system for determining CODMn 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. |
| |
| Keywords: | flow-injection chemiluminescence permanganate index (CODMa) luminol-KMnO4 |
| 本文献已被 CNKI 维普 万方数据 ScienceDirect PubMed 等数据库收录！ |
| 点击此处可从《环境科学学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《环境科学学报(英文版)》下载免费的PDF全文 |
