Thermospray spectral data

Mass spectrometric data to identify phenolic acids is getting more prevalent. Carini et al. [96] and Kammerer et al. [98] published valuable data about the determination of several phenolic acids and derivatives by HPLC/MS, in mate and black carrot, respectively. The data about the determination of phenolic compounds in wine was reviewed by Monagas et al. [72]. Positive ion thermospray LC/MS using a discharge electrode to effect solvent-mediated chemical ionization yields [M + H]+ ions and some fragmentation to principal losses of H2O, CO, and CO2, when applied to the analysis of simple phenolic acids [99]. Electrospray LC/MS is a more promising method and used successfully to determine phenolic acids and conjugates. Mass spectral data of several phenolic acids in flow injection analysis particle beam electron impact (FIA-PB-EI) MS is shown in Table 10.10 [100]. 

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