| 用新紫外光度法测定水中亚硝酸盐氮的研究 |
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| 引用本文： | 李桂敏,李党生,扈畅,李明玉.用新紫外光度法测定水中亚硝酸盐氮的研究[J].化学研究,2001,12(3):60-62. |
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| 作者姓名： | 李桂敏 李党生 扈畅 李明玉 |
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| 作者单位： | 1. 河南大学化学化工学院
2. 黄河职业技术学院 |
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| 摘 要： | 碱性品红与亚硝酸根在硫酸介质中反应 ,反应产物在近紫外区有一吸收峰 ,其λmax在 2 6 5nm .其NO-2 -N含量在 0～ 0 .6mg/L范围内符合比尔定律 ,ε=1.2 0 5× 10 4L·mol- 1·cm- 1,据此建立了一个简单、快速、选择性好的测定亚硝酸盐氮的新方法 .用于地表水、地下水的测定 ,结果与盐酸萘乙二胺比色法一致 .
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| 关 键 词： | 紫外光度法 亚硝酸盐氮 碱性品红 |
| 文章编号： | 1008-1011(2001)03-0060-03 |
| 修稿时间： | 2001年5月8日 |
The Determination of NO-2-N in Water by New UV Spectrophotometric Method |
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| LI Gui_min,LI Dang_sheng,HU Chang,LI Ming_yu.The Determination of NO-2-N in Water by New UV Spectrophotometric Method[J].Chemical Research,2001,12(3):60-62. |
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| Authors: | LI Gui_min LI Dang_sheng HU Chang LI Ming_yu |
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| Institution: | LI Gui_min1,LI Dang_sheng2,HU Chang2,LI Ming_yu1 |
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| Abstract: | The reaction of magenta and nitrite in sulfuric acid m ed ium was studied. A new selective and simple method in the determination of NO- 2-N in water was found because the reaction production had a peak of absorptio n in UV spectrophotometry at 265 nm. Beer's law is obeyed over the concentration range of 0～0.6 mg/L NO- 2-N. ε=1.205×104 L/mol·cm. The new method has be en used to determine surface water and ground water. The results obtained are qu ite satisfactory and are in agreement with those obtained by the maphthylethylen ediamine hydrochloride colorimetric method. |
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| Keywords: | UV spectrophotometry nitrite magenta |
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