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. 2015 Apr 13;13(4):2046–2062. doi: 10.3390/md13042046

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© 2015 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/4.0/).

PMC Copyright notice

Hydrophilic interaction liquid ion chromatography mass spectrometry analysis of paralytic shellfish toxins in a Gymnodinium catenatum culture isolated from the Portuguese coast in 2007. Multiple reaction monitoring in positive polarity was used to identify toxin derivatives. At least two confirmatory ion transitions were monitored for each paralytic shellfish toxin (PST) derivative. The primary transition ions are shown for all confirmed toxins in the samples: m/z 257 > 222 for dcSTX, m/z 273 > 255 for dcNeo, m/z 316 > 220 for C1 and GTX6, m/z 353 > 255 for dcGTX3, m/z 380 > 300 for GTX5, m/z 396 > 298 for C2, m/z 412 > 314 for C4 and m/z 412 > 332 for C3 (see Table 2 for details on the MS/MS parameters).