重氮化偶联反应；共振散射光谱；亚硝酸根；磺胺；N

亚硝酸根重氮化-偶联反应共振散射光谱测定

http://www.100md.com 《中国公共卫生》 2007年第4期

重氮化偶联反应；共振散射光谱；亚硝酸根；磺胺；N,N二甲基苯胺,,重氮化偶联反应；共振散射光谱；亚硝酸根；磺胺；N，N二甲基苯胺,1材料与方法,2结果,3小结,参考文献

     摘要：目的研究重氮化偶联反应的共振散射光谱并应用于亚硝酸根的测定。方法利用磺胺N，N二甲基苯胺亚硝酸根间发生的重氮化偶联反应，通过共振散射光谱法测定痕量亚硝酸根。结果方法的线性范围为0～12×10-3g/L，检出限为80×10-5g/L。结论该方法简单、灵敏度高、选择性好，用于蔬菜中亚硝酸根含量的测定，回收率为928%～985%。

    关键词：重氮化偶联反应；共振散射光谱；亚硝酸根；磺胺；N，N二甲基苯胺

    Application and study on resonance scattering spectra of diazotization-coupling reaction

    WU Xiuhong,DONG Cunzhi.

    Department of Chemistry,Huai'bei Coal Normal College(Huai'bei 235000,China)

    Abstract： Objective To study resonance light scattering(RLS) spectra of diazotization-coupling reaction and establish a new method for the determination of trace nitrite.Methods RLS spectra was used to determine trace nitrite by the diazotization-coupling reaction between sulfanilic amideN,Ndimethyl anilinenitrite.Results The linear range of this method was on 12×10-3g/L and the detection limit was 80 ×10-5g/L.Conclusion The method were simple ......

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