| 有机物对紫外光照下亚硝氮生成的影响 |
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| 引用本文： | 饶民华,杨宏伟,蒋展鹏.有机物对紫外光照下亚硝氮生成的影响[J].环境化学,2006,25(2):190-193. |
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| 作者姓名： | 饶民华 杨宏伟 蒋展鹏 |
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| 作者单位： | 清华大学环境科学与工程系,北京,100084;清华大学环境科学与工程系,北京,100084;清华大学环境科学与工程系,北京,100084 |
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| 摘 要： | 通过静态间歇试验,对紫外光照下水中无机氮的转化进行了研究,重点考察了有机物在反应过程中对亚硝氮生成的促进作用,分类比较了不同有机物的作用效果.结果表明:在紫外光照下,氨氮不能转化为亚硝氮,硝氮可以转化为亚硝氮;有机物的投加可以促进亚硝氮的生成;不同有机物对亚硝氮形成的促进作用大小与有机物的还原性有关,还原性愈强,促进作用愈大;有机物促进作用大小的顺序如下:相同碳链醇>醛>酸>酮、官能团愈多促进作用愈大,相同官能团碳链愈长促进作用愈大.
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| 关 键 词： | 亚硝酸盐 硝酸盐 紫外光照 |
| 收稿时间： | 2005-04-12 |
| 修稿时间： | 2005-04-12 |
EFFECT OF ORGANICS ON THE FORMATION OF NITRITE WITH ULTRAVIOLET IRRADIATION |
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| RAO Min-hua,YANG Hong-wei,JIANG Zhan-peng.EFFECT OF ORGANICS ON THE FORMATION OF NITRITE WITH ULTRAVIOLET IRRADIATION[J].Environmental Chemistry,2006,25(2):190-193. |
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| Authors: | RAO Min-hua YANG Hong-wei JIANG Zhan-peng |
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| Institution: | Department of Envionmental Science and Engineering, Tsinghua University, Beijing, 100084, China |
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| Abstract: | This paper studied the transformation of inorganic nitrogen with UV irradiation. In the reaction, the effects of different organics on the formation of nitrite were also studied and compared. The experimental results showed that NO2- -N can not be formed from NH3 -N but can be formed from NO3- -N with UV irradiation. The addition of organics can accelerate the formation of NO2- -N. The accelerating effect of organics depends on its reducibility. Stronger reducibility brings about greater effect. The effects of some organics on the formation of nitrite can be showed as following: for the organics with same carbon chain, the sequence is alcohol > aldehyde > acid > ketone and more functional groups have greater accelerating effect; for the organics with same functional group , longer carbon chain have greater accelerating effect. |
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| Keywords: | nitrite nitrate ultraviolet irradiation |
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