现代科学仪器Issue(3)：95-96,2.
气相分子吸收光谱法快速测定水中高锰酸盐指数
Rapid Determination of CODMn by Molecular Absorption Spectrometry
摘要
Abstract
This study describes a novel fast quantitative analysis method used nitrite as reductive agent for the detection of Potassium Permanganate Index (CODMn). The acidulated permanganate in water was firstly deoxidized by nitrite. Subsequently, the concentration of nitrite was detected by molecular absorption spectrometry. Due to the reaction between permanganate and nitrite, the readout signals were related to the concentration of potassium Permanganate Index. The results indicated a high sensitivity and stability with a detection limit of 0.29 mg/1 (R.S.D.% was 3.8%~5.8%) and the recovery was 93.2%-103.1% ranging from 0 to 9mg/l. The proposed method is rapid and accurate, few disturbances from the turbidity of the water and environmentally friendly. Taking into account these advantages, this method represents a promising platform for environmental emergency monitoring, on-line analysis and flow injection instrument exploitation and application.关键词
亚硝酸盐/高锰酸盐/气相分子吸收光谱法Key words
Nitrite/CODMn/ Molecular absorption spectrometry分类
化学化工引用本文复制引用
赵建平,沈璧君,赵洋甬,胡建林..气相分子吸收光谱法快速测定水中高锰酸盐指数[J].现代科学仪器,2011,(3):95-96,2.基金项目
国家水专项水污染源应急监测技术体系研究(2009ZX07527-002-06) （2009ZX07527-002-06）
