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Imaging Melamine in Egg Samples by Surface Desorption Atmospheric Pressure Chemical Ionization Mass Spectrometry

✍ Scribed by Shui-Ping YANG; Huan-Wen CHEN; Yu-Ling YANG; Bin HU; Xie ZHANG; Yu-Fen ZHOU; Li-Li ZHANG; Hai-Wei GU

Publisher
Elsevier Science
Year
2009
Tongue
Chinese
Weight
555 KB
Volume
37
Category
Article
ISSN
1872-2040

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✦ Synopsis

The characteristic fragment (m/z 85) of protonated melamine, generated in MS/MS spectra recorded from the surface of egg slices using surface desorption atmospheric pressure chemical ionization mass spectrometry (SDAPCI-MS), has been used to image melamine in slices of cooked egg. The experimental results showed that the spatial resolution of the imaging using SDAPCI-MS was 0.06 mm 2 . Egg yolk was proven to have little melamine in this study, and the most melamine was contained in egg white region, although not evenly distributed.

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