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J Chromatogr A. 2006 Jan 6;1101(1-2):69-78. Epub 2005 Oct 10.

Liquid chromatography/tandem mass spectrometric confirmatory method for determining aflatoxin M1 in cow milk: comparison between electrospray and atmospheric pressure photoionization sources.

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1
Department 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.

PMID:
16221477
DOI:
10.1016/j.chroma.2005.09.060
[Indexed for MEDLINE]
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