| Cu 2+ 对分光光度法测定水样中COD的影响 |
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| 引用本文： | 李广超,吴宏,卢菊生.Cu 2+ 对分光光度法测定水样中COD的影响[J].环境监测管理与技术,2009,21(1):55-57. |
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| 作者姓名： | 李广超 吴宏 卢菊生 |
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| 作者单位： | 徐州师范大学化学化工学院,江苏,徐州,221116 |
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| 摘 要： | 通过测定Cr^3＋、Cr2O7^2-和Cu^2＋吸收曲线及标准水样的COD值，研究了Cu^2＋对分光光度法测定COD的影响。结果表明，可改变吸收波长和量程消除较高质量浓度Cu^2＋对COD测定值产生的明显影响。当水样Cu^2＋质量浓度超过400mg／L时，须将水样稀释后采用低量程法进行测定。
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| 关 键 词： | 化学需氧量 分光光度法 铜离子 |
EffectofCopperIon inW ater Sample on COD Determ ination by Spectrophotometry |
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| LIGuang,chao.EffectofCopperIon inW ater Sample on COD Determ ination by Spectrophotometry[J].The Administration and Technique of Environmental Monitoring,2009,21(1):55-57. |
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| Authors: | LIGuang chao |
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| Institution: | School of Chemistry and Chemical Engineering;Xuzhou Normal University;Xuzhou;Jiangsu 221116;China |
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| Abstract: | The effect of Copper ion on COD determination with spectrophotometry was studied by absorption curve measurement of Cr^3＋ ,Cr2 O7^2- ,Cu^2＋ and COD of standard water samples. The results showed that the obvious effect of high concentration of Copper ion could be eliminated by change of the absorption wavelength or range. The water samples should be diluted with low range method for COD determination if the concentration of Cu^2＋ was over 400 mg/L. |
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| Keywords: | COD Spectrophotometry Copper ion |
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