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Thermospray LC/MS/MS analysis of wastewater for disperse azo dyes
Author(s) -
Betowski L. D.,
Pyle S. M.,
Ballard J. M.,
Shaul G. M.
Publication year - 1987
Publication title -
biomedical and environmental mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0887-6134
DOI - 10.1002/bms.1200140709
Subject(s) - thermospray , chromatography , tandem mass spectrometry , chemistry , mass spectrometry , wastewater , liquid chromatography–mass spectrometry , effluent , high performance liquid chromatography , tandem , activated sludge , selected reaction monitoring , materials science , environmental science , environmental engineering , composite material
Primary effluent from a municipal wastewater treatment plant was used as the feed in bench scale activated sludge systems. These systems were spiked with disperse azo dyes at 1 mg l −1 and 5 mg l −1 levels and were sampled at various points in the process. Samples were analysed by high performance liquid chromatography with UV = visible detection and by thermospray ionization MS and tandem mass spectrometry (MS/MS) using direct injection or via column chromatography. The tandem mass spectrometry techniques were used both for method development purposes and for the specificity and extra information these techniques can provide. The investigation of the fate of disperse azo dyes in the activated sludge process was a major feature of this study. Major degradation products have been identified by tandem mass spectrometry analyses of these wastewaters. Precision and accuracy data generated by the thermospray tandem mass spectrometry technique are compared to those derived from the high performance liquid chromatography /UV‐visible method.