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首页> 外文OA文献 >The use of the DR CALUX bioassay and indicator polychlorinated biphenyls for screening of elevated levels of dioxins and dioxin-like polychlorinated biphenyls in eel.
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The use of the DR CALUX bioassay and indicator polychlorinated biphenyls for screening of elevated levels of dioxins and dioxin-like polychlorinated biphenyls in eel.

机译：DR CALUX生物测定和指示剂多氯联苯用于鳗鱼中二恶英和类二恶英类多氯联苯水平升高的筛查。

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The DR CALUX bioassay is a very suitable screening method for dioxins and dioxin-like-PCBs in feed and food. This was, e. g. demonstrated in a survey in the Netherlands to control the dioxin levels in eel. The DR CALUX assay, but also indicator polychlorinated biphenyls (PCB) were evaluated as a screening method. Based on the limit for polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDD/F) [at that time 8 pg toxic equivalents (TEQ)/g eel], and the relation between PCDD/F and dioxin-like-PCB, a decision limit of 30 pg TEQ/g eel was used for screening of 153 field samples. Suspected samples (21) and part of the higher contaminated negative samples (35) were analyzed by GC/MS for dioxins, non-ortho, mono-ortho and indicator PCB, revealing 13 samples exceeding the action limit of 30 pg TEQ/g eel. Only one sample slightly exceeded the dioxin level of 8 pg TEQ/g eel. The relatively low sensitivity for mono-ortho PCB was overcome by the use of reference samples, as shown by the correlation of 0.93 between GC/MS and CALUX determined total TEQ levels. The present data show that the DR CALUX assay can be used for screening of total TEQ levels in eel. The use for dioxins only requires a safe, and therefore relatively low, decision limit. The indicator PCB also showed a good correlation with total TEQ levels, mainly due to the large contribution of the mono-ortho PCB at higher concentrations. The relation with dioxins was very poor and as such indicator PCB seem less suitable than the DR CALUX assay for screening for dioxins only. The present study clearly shows that part of the wild eel samples contains high total TEQ levels and will exceed the future European Union limit of 12 pg TEQ/g eel for dioxins and dioxin-like PCB. Especially at high TEQ levels, dioxin-like PCB contribute most to the total TEQ. In practice, wild eel presents only a minor part of the eel consumed.
机译：DR CALUX生物测定法非常适用于筛查饲料和食品中的二恶英和二恶英样多氯联苯。这是e。 G。在荷兰的一项调查中证明可以控制鳗鱼中的二恶英水平。作为筛选方法，对DR CALUX分析以及指示剂多氯联苯（PCB）进行了评估。根据多氯二苯并对二恶英/二苯并呋喃（PCDD / F）的限量[当时为8 pg毒性当量（TEQ）/ g鳗鱼]，以及PCDD / F与二恶英样PCB的关系，做出决定极限值为30 pg TEQ / g鳗鱼用于筛选153个野外样品。通过GC / MS对可疑样品（21）和部分较高污染的阴性样品（35）进行了GC / MS分析，以检测二恶英，非原邻，单原邻和指示剂PCB的含量，发现有13个样品的行动限值超过30 pg TEQ / g鳗鱼。只有一个样品稍微超过了二恶英水平，即8 pg TEQ / g鳗鱼。通过使用参考样品克服了单正交PCB相对较低的灵敏度，如GC / MS和CALUX确定的总TEQ水平之间的0.93的相关性所示。目前的数据表明，DR CALUX分析可用于筛选鳗鱼中总TEQ水平。二恶英的使用只需要一个安全的决定极限，因此相对较低。指示剂PCB也显示出与总TEQ水平的良好相关性，这主要是由于单邻位PCB在较高浓度下的贡献很大。与二恶英的关系非常差，因此指示剂PCB似乎比DR CALUX分析法更不适合仅用于筛选二恶英。本研究清楚地表明，部分野生鳗鱼样本中的总TEQ含量很高，并且将超过欧盟对二恶英和二恶英样PCB的未来限制，即12 pg TEQ /克鳗鱼。尤其是在高TEQ含量下，类二恶英PCB对总TEQ的贡献最大。实际上，野生鳗鱼仅占所消费鳗鱼的一小部分。

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