【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
【机 构】
：
College of Environmental Science and Engineering,Nanyang Institute of Technology
【基金项目】
：
湖北省武汉市青年科技晨光计划;国家自然科学基金
论文部分内容阅读
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.
其他文献
职业道德是从事各种职业所必须具备的基本素质,企业在营销行为中同样要具有良好的营销道德,因为其不仅关系着企业的生存安危,同时也关系到市场经济秩序的稳定.然而,在营销活
探讨了种球采收期和预处理对朱顶红年宵花促成栽培的影响.结果表明:10月采收朱顶红种球的花芽萌发率高于9月采收种球,但其春节前开花率则低于9月采收种球;低温贮存的朱顶红种
中小企业的蓬勃发展不仅能增强一国市场经济的活力,更能在解决就业、维护社会稳定等方面起到重要作用.但是,刚刚发生的温州中小企业危机让我们看到了目前中国中小企业生存的
内部控制评价是对内部控制本身的再控制,是内部控制目标实现以及作用发挥的重要环节.由于我国内部控制正逐步由自愿披露到强制披露阶段转变,各种评价方法参差不齐,因此建立一
In this study, the authors have investigated the effects of various factors on both aerobic and anaerobic degradation of 4-t-octylphenol (4-t-OP) in granular sl
本试验旨在探讨鱤幼鱼对晶体氨基酸的利用效果,并在此基础上确定鱤幼鱼赖氨酸的需求量.试验设计7组等氮饲料,其中对照组饲料蛋白质源全部为结合蛋白(鱼粉和酪蛋白),试验组饲
Continuous and prolonged human disturbances have caused severe degradation of a large portion of lowland in South China, and how to restore such degraded ecosys
We present radio images of NRAO 530 on scales ranging from pc to kpc. The observations include the EVN at 5 GHz, the VLBA at 1.6, 8.6 and 15 GHz, the MERLIN at
A selective and sensitive reagent of 2-pyridine carboxaldehyde isonicotinyl hydrazone(2-PYAINH)was synthesized and studied for the spectrophotometric determinat
Irrigation with various dilutions of seawater can act as an alternate water resource and thus plays an important role in saving freshwater resources as well as