Barco Mónica, Flores Cintia, Rivera Josep, Caixach Josep
Mass Spectrometry Laboratory, Department of Ecotechnologies, IIQAB-CSIC, C/Jordi Girona 18-26, 08034 Barcelona, Spain.
Toxicon. 2004 Dec 15;44(8):881-6. doi: 10.1016/j.toxicon.2004.08.011.
A water bloom of Planktothrix (Oscillatoria) rubescens was observed in a drinking water reservoir in central Spain in 2003. Microcystins where analysed by LC/ESI-MS in 21 samples collected from this reservoir in five different days between March and May. A demethylated variant of microcystin-RR was identified as the major microcystin in most samples. Trace levels of microcystin-LR, -RR and -YR were detected in some samples. Four less common microcystins, with [M+H]+ ions at m/z 960, 981, 1045 and 1053, were also found. Total extracellular microcystin concentration varied from 0.010 to 19.126 microg l(-1). Furthermore, anabaenopeptins B and F as well as Oscillamide Y were also identified in these samples.
2003年在西班牙中部的一个饮用水水库中观察到了微红颤藻（颤藻属）水华现象。在3月至5月间的五个不同日子，从该水库采集了21个样本，通过液相色谱/电喷雾电离质谱法（LC/ESI-MS）分析微囊藻毒素。在大多数样本中，一种去甲基化的微囊藻毒素-RR变体被鉴定为主要的微囊藻毒素。在一些样本中检测到痕量水平的微囊藻毒素-LR、-RR和-YR。还发现了四种不太常见的微囊藻毒素，其[M+H]+离子的质荷比分别为960、981、1045和1053。细胞外微囊藻毒素的总浓度在0.010至19.126微克/升之间变化。此外，在这些样本中还鉴定出了鱼腥藻毒素B和F以及振荡酰胺Y。
