Abstract
A high-performance liquid chromatographic method developed for the determination of both okadaic acid (OA) and free fatty acids (FFA) was used for analysing mussel samples collected in the Gulf of Trieste. OA and FFA extracted from mussel hepatopancreas were derivatized prior to their chromatographic separation and spectrofluorimetric detection. 9-Chloromethylanthracene (CA) was used as a fluorescent labelling agent. The presence of toxic fatty acids ( e.g., linolenic acid), which may interfere with the bioassay of diarrhoetic shellfish poisoning (DSP) toxins, in the lipidic fraction of the extract was observed, whereas no OA was detected in the analysed samples.
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