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Enantioselective Analysis of Organochlorine Pesticides in Herring and Seal from the Swedish Marine Environment

机译:瑞典海洋环境中鲱鱼和海豹中有机氯农药的对映选择性分析

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Factors influencing the changes of enantiomeric ratios (ERs) in herring (Clupea harengus), grey seal (Halichoerus grypus), harbour seal (Phoca vitulina) and ringed seal {Phoca hispida) collected along the Swedish coastline were studied by enantioselective high-resolution gas chromatography (HRGC). Three-year-old male and female herring individuals from different sampling sites were selected, whereas seal blubber and liver samples represented different species, sexes and geographical locations. Enantioselective analysis of α-hexachlorocyclohexane (α-HCH), chlordanes and chlordane metabolites were performed. In general, herring showed similar ERs within the Baltic Sea. Results indicate that species specific differences are important factors controlling the ERs of Baltic seals. Inverse ERs in seal blubber and liver, and a low deviation from the racemic ratio of some components in the liver, indicate that not only enantioselective degradation but also stereoselectivity of other processes are responsible for the changes of ERs in biota.
机译:利用对映选择性高分辨率气体研究了沿瑞典海岸线收集的鲱鱼(Clupea harengus),灰海豹(Halichoerus grypus),斑海豹(Phoca vitulina)和环斑海豹(Phoca hispida)的对映体比率(ERs)变化的影响因素。色谱(HRGC)。选择了来自不同采样地点的三岁男性和女性鲱鱼个体,而海豹脂和肝脏样本代表了不同的物种,性别和地理位置。对α-六氯环己烷(α-HCH),氯丹和氯丹代谢产物进行对映选择性分析。一般而言,鲱鱼在波罗的海内显示出相似的内质网。结果表明,物种特异性差异是控制波罗的海海豹ERs的重要因素。海豹脂肪和肝脏中的逆ERs,以及与肝脏中某些成分的外消旋比的低偏差,表明不仅对映体选择性降解,而且其他过程的立体选择性也是生物群中ERs变化的原因。

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