Liquid chromatography/tandem mass spectrometric confirmatory method for determining aflatoxin M1 in cow milk:
Chiara Cavaliere1, Patrizia Foglia, Elisabetta Pastorini
1Department of Chemistry, La Sapienza University, Piazzale Aldo Moro 5, 00185 Rome, Italy.
Abstract:
A liquid chromatography/electrospray (ESI)-tandem mass spectrometric method for the measurement of aflatoxin M1 (AFM1) in milk is described. Milk sample after protein precipitation with acetone was cleaned-up with a Carbograph-4 cartridge. Performances of the ESI source were compared with those of the atmospheric pressure photoionization source (APPI). Although a method quantification limit (MQL) of 6 ng/kg could be achieved operating with APPI source with respect to an MQL of 12 ng/kg with ESI, all the other performances being similar, then ESI was preferred as being more robust and widespread at present.
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