| 分光光度法测定水体化学需氧量 |
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| 引用本文： | 肖玲,文庆珍,李红霞.分光光度法测定水体化学需氧量[J].广州化工,2012,40(7):130-132. |
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| 作者姓名： | 肖玲 文庆珍 李红霞 |
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| 作者单位： | 海军工程大学,湖北武汉,430033 |
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| 基金项目： | 海军工程大学理学院2011年教学研究项目;海军工程大学2010年教学研究项目;海军工程大学校基金资助 |
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| 摘 要： | 建立了分光光度法测定水体中需氧量的方法。采用分光光度法的原理,以MnO4-的最大吸收波长525 nm为测定波长,消除了MnO2微浮颗粒的影响,该方法 COD测定范围为0～50 mg/L,与国家标准滴定法之间无明显差异,具有成本低、操作简单方便等特点,用于水样测定结果满意。
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| 关 键 词： | 化学需氧量 高锰酸根离子 分光光度法 |
Determination of Chemical Oxygen Demand by Equivalent Absorbance Spectrophotometry |
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| XIAO Ling,WEN Qing-zhen,LI Hong-xia.Determination of Chemical Oxygen Demand by Equivalent Absorbance Spectrophotometry[J].GuangZhou Chemical Industry and Technology,2012,40(7):130-132. |
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| Authors: | XIAO Ling WEN Qing-zhen LI Hong-xia |
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| Affiliation: | (Department of Chemical and Materials,College of Science,Naval University of Engineering,Hubei Wuhan 430033,China) |
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| Abstract: | A new method for the determination of chemical oxygen demand（COD） was established based on equivalent absorbance spectrophotometry.This method was used for eliminating the influence of micro-floating patricles of MnO2.The maximum absorption wavelength of permanganate ion was 525 nm,and the measuring range of COD was 0~50 mg/L.There was no obvious difference with national standard titration.Successfully applied this method to determine COD in water was low cost,simple and effective. |
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| Keywords: | chemical oxygen demand permanganate ion equivalent spectrophotometry |
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