The objective of this study was to investigate the pharmacokinetic (PK) properties of oxolinic acid (OA) in black rockfish ( Sebastes schlegelii ) following a single oral administration of 30 mg/kg at 13°C and 22°C. Serum and tissue (muscle, liver and kidney) samples were collected at pre‐determined time points and analysed using high‐performance liquid chromatography coupled with tandem mass spectrometry (HPLC‐MS/MS). The res...

This study presents a comprehensive analysis of gymnodimine-series toxins produced by Alexandrium ostenfeldii (K- 1354) using liquid chromatography tandem mass spectrometry (LC-MS/MS). Three peaks with identical precursor ions but different retention times were observed, suggesting the presence of isomers identified as gymnodimines B, C, and D. Employing an integrated approach combining LC-MS/MS with electron transfer dissocia...