| 偶氮化合物的极谱行为及痕量亚硝酸盐测定的研究 |
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| 引用本文： | 王耀光,齐秀贞,陈立. 偶氮化合物的极谱行为及痕量亚硝酸盐测定的研究[J]. 福建分析测试, 1994, 0(1) |
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| 作者姓名： | 王耀光 齐秀贞 陈立 |
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| 作者单位： | 福州大学化学系，福州大学化学系，福州大学化学系 福州 350002，福州 350002，福州 350002 |
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| 摘 要： | 本文研究了在氨性介质中,对氨基苯甲酸重氮盐与8-羟基喹啉形成偶氮化合物的最佳实验条件,并对电极反应机理作丁初步探讨,建立了一个灵敏、快速测定NO_2~-的新方法。大量NO_3~-存在不干扰。用于多种水样中痕量NO_2~-测定,获得满意结果,回收率为92％～100％。
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| 关 键 词： | 亚硝酸盐 新极谱法 偶氮化合物 |
Study on Polarographic Behaviour of Azo-compound and Determination of Trace Amount of Nitrite |
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| Wang Yaoguang Qi Xiuzhen Chen Li. Study on Polarographic Behaviour of Azo-compound and Determination of Trace Amount of Nitrite[J]. Fujian Anal Ysis & Testing, 1994, 0(1) |
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| Authors: | Wang Yaoguang Qi Xiuzhen Chen Li |
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| Abstract: | In this paper, the optimum experimental conditions of the azocompound formed by the nitrite-p-aminobenzoic acid-oxine in the ammonical medium and the mechanism of electrode reaction has been studied. A very sensitive and reproduceable 2.5th order differential electroanalytical method for determination of trace amounts nitrite in water is developed. The peak height is proportional to the concentration of nitrite over a range of 2 x 10~(-9)—4x10~(-7)g/ml. 5000-fold amount of nitrate does not interfere. Several water samples have been analyzed and the results conform to those by spectrophotometry. The recovery of nitrite ion is 92-100%. |
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| Keywords: | Nitrite Neopolarography Water analysis |
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