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| 基于亚硝化反应的极谱法测定亚硝酸根的研究 | |
| 引用本文： | 王亚林,方能虎,康敬万,高锦章.基于亚硝化反应的极谱法测定亚硝酸根的研究[J].分析测试学报,1999,18(3). |
| 作者姓名： | 王亚林 方能虎 康敬万 高锦章 |
| 作者单位： | 1. 淮北煤炭师范学院化学系,淮北,235000 2. 上海交通大学化学化工学院,上海,200240 3. 西北师范大学化学系,兰州,730070 |
| 摘 要： | 提出了一种基于在酸性介质中甲基紫与亚硝酸根发生亚硝化反应，极谱法测定亚硝酸根的新体系。亚硝化产物在－０．７５Ｖ（ｖｓ．ＳＣＥ）处２．５次微分波的波高与ＮＯ２－的质量浓度在２．０×１０－３～２．０×１０－２ｍｇ／Ｌ（Ｓ＝４μＡ），４．０×１０－３～１．６×１０－１ｍｇ／Ｌ（Ｓ＝０．０２ｍＡ）范围内成直线关系。该法重复性好，且大多数常见的阴、阳离子不干扰，用于污水中痕量ＮＯ２－的测定，结果满意。 |
| 关 键 词： | 亚硝化反应 甲基紫 亚硝酸根 示波极谱法 |
Determination of Nitrite by Polarography Based on Nitrosation Reaction |
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| Wang Yalin,Fang Nenghu,Kang Jinwan,Gao Jinzhang.Determination of Nitrite by Polarography Based on Nitrosation Reaction[J].Journal of Instrumental Analysis,1999,18(3). | |
| Authors: | Wang Yalin Fang Nenghu Kang Jinwan Gao Jinzhang |
| Abstract: | A new method based on nitrosation reaction of methyl violet (MV) with nitrite in acid medium has been developed for the determination of nitrite by single _ sweep polarography. The height of 2.5 order derivative polarographic wave of nitrosation reaction product is linear with the concentration of nitrite at -0.75 V(vs.SCE) in the range of 2.010-32.010-2 mg/L (S=4 A), 4.010-31.610-1 mg/L (S=0.02 mA). Most common anions and cations have no interference. This procedure was successfully applied to the determination of trace amount of nitrite in waste water. |
| Keywords: | Nitrosation reaction Methyl violet Nitrite Polarography |
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