Abstract:As a cheap but harmful additive in food industry, 1-phenylazo-2-naphthol (Sudan I) has attracted lots of attentions, which mainly focused on the determinations using the HPLC-ESI-MS/ MS techniques. However, the fragmentation mechanisms are generally scarce. In this paper, the fragmentation pathways of protonated Sudan I in gas-phase were investigated by a combination of electrospray ionization-tandem mass spectrometry and density functional theory (DFT) calculations. Initially, the cleavage of azo bond is trig… Show more
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