吴杰, 陈凌, 陈群定, 陈伟建, 林子俺. Rapid Identification of Edible Oils by Ionization Mass Spectrometry with Magnetic Metal Organic Frameworks based Surface assisted Laser Desorption[J]. 2019, 38(4): 423-428.
吴杰, 陈凌, 陈群定, 陈伟建, 林子俺. Rapid Identification of Edible Oils by Ionization Mass Spectrometry with Magnetic Metal Organic Frameworks based Surface assisted Laser Desorption[J]. 2019, 38(4): 423-428.DOI: doi:10.3969/j.issn.1004-4957.2019.04.008.
A new method of magnetic metal organic framework(Fe3O4@MOFs) surface assisted laser desorption ionization mass spectrometry(SALDI-MS) was established
based on the ambient synthesization of core-shell magnetic zeolitic imidazolate framework-8(Fe3O4@ZIF-8) microspheres by a simple self assembly method with carboxylated Fe3O4 as the core.The effects of different sample preparation methods such as dried droplet method
thin layer method and sandwich method were investigated in details.Results showed that the sample prepared by sandwich method has many advantages including uniform matrix distribution
little “sweet point”
high sensitivity
and good signal reproducibility.In this paper
triglycerides in peanut oil
lard and canola oil were used as target objects
and different edible oils were identified by the SALDI-MS method rapidly.Compared with traditional MALDI-MS method
the SALDI-MS method based on Fe3O4@ZIF-8 could obtain more abundant composition information of oil
better mass resolution and higher detection sensitivity
could be better applied in the rapid identification of edible oil samples.