Characterization of methyl orange and its photocatalytic degradation products by HPLC/UV-VIS diode array and atmospheric pressure ionization quadrupole ion trap mass spectrometry

被引：267
作者：
Baiocchi, C
Brussino, MC
Pramauro, E
Prevot, AB
Palmisano, L
Marcì, G
机构：
[1] Univ Turin, Dipartimento Chim Analit, I-10125 Turin, Italy
[2] Univ Palermo, Dipartimento Ingn Chim Proc & Mat, I-90128 Palermo, Italy
来源：
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY | 2002年 / 214卷 / 02期
关键词：
HPLC/MS; sulfonated azo dyes; effluents analysis;
D O I：
10.1016/S1387-3806(01)00590-5
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
HPLC/UV-VIS diode array and HPLC/MS techniques were successfully applied to the analysis of sulfonated molecules present in samples coming from the photocatalytic degradation of the azo dye indicator, methyl orange. The substrate was chosen as a simple model for the study of reactions involving the more complex commercial products used for the dyeing of textile fibers. Unexpected MS fragmentation path was observed, due to the very stable methyl orange molecular structure. The chromatographic information were combined with the obtained MS, MS/MS data and the UV-VIS diode array spectra and allowed to rationalize the molecular structures attributable to the various degradation products. (C) 2002 Elsevier Science B.V. All rights reserved.
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页码：247 / 256
页数：10
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