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. 2014 Jan 24;6(2):402–415. doi: 10.3390/toxins6020402

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© 2014 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Multiple Reaction Monitoring (MRM) chromatogram in positive mode of the Anabaena spp. LEGE X-002 extract (left) and Anabaena sp. LEGE 00233 extract (right) on the triple quadrupole mass spectrometer (QTRAP) instrument. Transitions monitored in the MS method: anatoxin-a (ATX) (m/z 166 > 166, m/z 166 > 43), homoanatoxin-a (HATX) (m/z 180.1 > 163.1, m/z 180.1 > 145.1), dihidroanatoxin (H₂ATX) (m/z 168.0 > 133.0, 168.0 > 150.0), dihidrohomoanatoxin (H₂HATX) (m/z 182.0 > 147.0, 182.0 > 164.1), epoxyanatoxin-a (EpoxyATX-a) (m/z 182.0 >164.1, 182.0>138.1) and epoxyhomoanatoxin-a (EpoxyhomoATX-a) (m/z 196.0 > 178.2, 196.0 > 138.1).