| 重铬酸钾法和紫外分光光度法测污水中COD的实验分析 |
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| 引用本文： | 仲婧,刘明仁,张昭良.重铬酸钾法和紫外分光光度法测污水中COD的实验分析[J].山东化工,2010,39(10):34-34,49. |
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| 作者姓名： | 仲婧 刘明仁 张昭良 |
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| 作者单位： | 1. 泰山医学院,化学与化学工程学院,山东,泰安,271016;济南大学,化学化工学院,山东,济南,250022
2. 济南大学,化学化工学院,山东,济南,250022 |
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| 摘 要： | 分别用重铬酸钾法和紫外分光光度计测定了污水中的化学需氧量COD及紫外吸光度A值。通过测量比较,数据拟合后,得出两者线性关系式为:COD(mg/L)=(A+0.00950)/0.02945,线性相关系数r=0.9986。实验结果表明,污水中COD与A值具有良好的线性关系,利用紫外分光光度法可以简便有效地检测污水中化学需氧量COD。
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| 关 键 词： | 化学需氧量 紫外吸光度 线性关系 |
The Experimental Analysis of COD of the Polluted Water by Potassium Dichromate Method and the UV Absorbance |
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| ZHONG Jing,LIU Ming-ren,ZHANG Zhao-liang.The Experimental Analysis of COD of the Polluted Water by Potassium Dichromate Method and the UV Absorbance[J].Shandong Chemical Industry,2010,39(10):34-34,49. |
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| Authors: | ZHONG Jing LIU Ming-ren ZHANG Zhao-liang |
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| Affiliation: | ZHONG Jing, LIU Ming - ren, ZHANG Zhao - liang (1. School of Chemistry and Chemical Engineering, Taishan Medical College, Taian 271016,China; 2. School of Chemistry and Chemical Engineering, University of Jinan,Jinan 250022, China ) |
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| Abstract: | Chemical oxygen demand COD were determined by potassium dichromate method and the UV absorbance were determined by the UV spectrophotometer to research the relevance between them. Compared by measuring and data fitting, the linear relationship which was COD （mg/L） = （ A ＋ 0. 00950）/0.02945 between the two was obtained, with a good linear correlation coefficient equal to 0. 9986. The results showed that the COD and the A value of the polluted water had a good linear relationship, and the ultraviolet spectrophotometer used to determine chemical oxygen demand COD in wastewater was very simple and effective. |
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| Keywords: | chemical oxygen demand （COD） UV absorbance（A） linear relationship |
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