| 银盐沉淀法测定化工废水中的COD |
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| 引用本文： | 姜玉梅.银盐沉淀法测定化工废水中的COD[J].当代化工,2009,38(2):198-200. |
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| 作者姓名： | 姜玉梅 |
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| 作者单位： | 湖南化工职业技术学院,湖南,株洲,412004 |
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| 摘 要： | 研究了用硝酸银代替硫酸汞掩蔽氯离子测定化工废水中COD的分析方法；试验了从COD测定废液中提取氯化银沉淀，直接用氯化银与浓硫酸反应制备硫酸银催化剂的可行性。实验结果表明，该法具有较好的准确性和重复性，从根本上避免了汞对环境的污染及银的浪费，有着较好的社会效益和经济效益。
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| 关 键 词： | COD 化工废水 银盐沉淀法 |
Analytical Techniques of Determining COD in Chemical Wastewater with Silver Precipitation Method |
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| JIANG Yu-mei.Analytical Techniques of Determining COD in Chemical Wastewater with Silver Precipitation Method[J].Contemporary Chemical Industry,2009,38(2):198-200. |
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| Authors: | JIANG Yu-mei |
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| Affiliation: | JIANG Yu-mei (Hunan Chemical Industry and Vocational Technology College, Hunan Zhuzhou, 412004, China) |
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| Abstract: | The analytical methods to determine COD in chemical wastewater by using silver nitrate in place of mercury sulfate to mask chloride ion were studied;Extracting silver chloride precipitation from the determined COD waste liquid, the feasibility of preparing silver sulfate catalyst by the direct reaction of silver chloride and concen- trated sulfuric acid was analyzed. Experimental results showed that the method has good accuracy and repeatabili- ty, fundamentally avoiding the environmental pollution caused by mercury and silver waste. Thus it has a better social and economic benefits. |
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| Keywords: | COD |
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