| 尿素-甲醛法测定硝酸根 |
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| 引用本文： | 吴珧萍,陈天朗,肖慎修.尿素-甲醛法测定硝酸根[J].理化检验(化学分册),2005,41(10):746-747,750. |
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| 作者姓名： | 吴珧萍 陈天朗 肖慎修 |
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| 作者单位： | 四川大学,化学学院,成都,610064 |
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| 摘 要： | 对硝酸盐中硝态氮含量进行测定，发现硝酸根与尿素之间在硫酸存在下会发生一系列的反应，利用这些反应间的定量关系，可外加一定量的尿素，通过甲醛法测定酰氨态氮含量，根据酰氨态氮损失量可以求得硝酸根含量，从反应温度、时间等方面进行试验，证明了该方法的可行性。
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| 关 键 词： | 尿素-甲醛法 硝酸根的分析 滴定分析 |
| 文章编号： | 1001-4020（2005）10-0746-02 |
| 收稿时间： | 2004-04-28 |
| 修稿时间： | 2004-04-28 |
UREA-FORMOL TITRATION FOR DETERMINATION OF LARGE AMOUNT OF NITRATE |
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| WU Yao-ping,CHEN Tian-lang,XIAO Shen-xiu.UREA-FORMOL TITRATION FOR DETERMINATION OF LARGE AMOUNT OF NITRATE[J].Physical Testing and Chemical Analysis Part B:Chemical Analgsis,2005,41(10):746-747,750. |
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| Authors: | WU Yao-ping CHEN Tian-lang XIAO Shen-xiu |
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| Institution: | Chemistry College, Sichuan University, Chengdu 610064, China |
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| Abstract: | A study on the determination of nitrate was reported in this paper. Analytical method was based on a series of reaction and quantitative relationship between nitrate and urea. A difinite amount of urea was added in the sample to take part in the reaction. Conditions of reaction temperature and reaction time were experimentally optimized. Nitrate was finally determined by titration with slandardized NaOH solution and calculated from the losses of amide nitrogen. |
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| Keywords: | Urea-formol method Nitrate determination Titration |
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