Desorption Electrospray Ionization Mass Spetrometry for Rapid Detection of Carcinogenic Aromatic Amines in Textiles

Using a mixture of V (methanol):V (water):V (acetic acid)＝49:49:2, as the electrospray liquid, under optimized experimental conditions, as 24 kinds of carcinogenic aromatic amines on various texture of textile samples were fast directly detected by DESI-MS non-destructive. During analyzing actual sample, the mean analysis time for a single sample is about 30 s due to the method without the sample pretreatment, so it can save a lot of analysis time and improve the efficiency of the analysis. At the same time, the DESI-MS/MS has the elimination of false positive alert in virtue of the DESI-MS/MS of differentia. The method has a high sensitivity for analyzing most aromatic amines, with typical values ranges in a few 10^－9 g•kg^－1.