Acta Optica Sinica, Volume. 31, Issue 5, 530002(2011)
Fluorescence Characteristics of Typic Azo and Non-Azo Dyes
In order to study fluorescence characteristics of typic azo and non-azo dyes, fluorescence characteristics of acid orange Ⅱ, indigo carmine and acid orange Ⅱ without azo-bone are detected by excitation-emission matrix (EEM) fluorescence spectra. Results show that fluorescence intensity of typic azo dyes (such as acid orange Ⅱ) is very weak, while fluorescence intensity of typic non-azo dyes (such as indigo carmine) is very strong. In other words, azo dyes in wastewater can be distinguished quickly by EEM spectral technique. It is clear that azo-bone of azo dyes has fluorescen quenching, which results in deep depression of fluorescence intensity for azo dyes (such as acid orange Ⅱ). When azo-bone of azo dyes is broken down by electro-fenton, their fluorescence intensity increases dramatically, and this phenomenon is the unique features of azo dyes.
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Lai Bo, Lian Yu, Pang Cuicui, Zhou Yuexi, Qin Hongke, Zhou Jihong, Zhang Sheng. Fluorescence Characteristics of Typic Azo and Non-Azo Dyes[J]. Acta Optica Sinica, 2011, 31(5): 530002
Category: Thin Films
Received: Nov. 1, 2010
Accepted: --
Published Online: May. 9, 2011
The Author Email: Bo Lai (lingyun012@163.com)