| 测定地表水中微量亚硝酸盐的灵敏光度法 |
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| 引用本文： | 刘锐,刘汉初,张鸽.测定地表水中微量亚硝酸盐的灵敏光度法[J].环境工程,2002,20(1):60-61. |
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| 作者姓名： | 刘锐 刘汉初 张鸽 |
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| 作者单位： | 常德市环境监测站,湖南,415003 |
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| 摘 要： | 研制了一种测定微量亚硝酸盐的灵敏光度法。在pH1 0～ 2 0盐酸介质中 ,亚硝酸盐与对氨基苯乙酮 萘乙二胺形成可溶于水的红紫色染料 ,其最大吸收波长为 5 5 0nm ,摩尔吸光系数为 5 78× 10 4L mol·cm。 0～ 3 6 μg 2 5mL的亚硝酸盐遵守比尔定律 ,方法应用于测定地表水中微量亚硝酸盐 ,获得了满意的结果
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| 关 键 词： | 亚硝酸盐 对氨基苯乙酮萘乙二胺 光度法 地表水 |
SPECTROPHOTOMETRIC DETERMINATION OF TRACE NITRITE IN SURFACE WATER |
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| Liu Yue et al.SPECTROPHOTOMETRIC DETERMINATION OF TRACE NITRITE IN SURFACE WATER[J].Environmental Engineering,2002,20(1):60-61. |
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| Authors: | Liu Yue |
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| Institution: | Liu Yue et al |
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| Abstract: | A new and sensitive method has been developed for the spectrophotometric determination of trace nitrite.In HCl medium with pH of 1.0～2.0,nitrite reacts with p aminoacetophenone N (1 naphthyl)ethylenediamine to form water soluble reddish violet dye whose maximum absorptive wavelength is 550 nm.The molar absorptivity of the dye is 5.78×10 4 at 550 nm.Beer's law is obeyed in the range of 0～3.6 μg/25mL of nitrite.The method has been used for the determination of trace nitirite in surface water and the results are satisfactory. |
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| Keywords: | nitrite p aminoacetophonone N (1 naphthyl)ethylendiamine spectrophotometry and surface water |
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