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首页> 外文期刊>International journal of environmental analytical chemistry >PAH metabolism in the earthworm Eisenia fetida - identification of phase Ⅱ metabolites of phenanthrene and pyrene
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PAH metabolism in the earthworm Eisenia fetida - identification of phase Ⅱ metabolites of phenanthrene and pyrene

机译：et Eisenia fetida中PAH的代谢-菲和Ⅱ相代谢产物的鉴定。

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摘要

Polycyclic aromatic hydrocarbons (PAHs) are soil contaminants. Because of their high lipophilicity, PAHs are associated with the organic matter in the soil. Transformation of PAHs generates polar metabolites and the interaction with organic matter in the soil changes. The polar PAH metabolites are persistent, highly water-soluble and potentially leachable from the soil; the understanding of transformation of PAHs to polar metabolites in the responsible organisms is of great importance. Here, we present a study of transformation of the PAHs pyrene and phenanthrene, by the common earthworm Eisenia fetida. The study showed that E. fetida in hydroponic culture was able to transform PAHs to conjugated phase II metabolites. We detected phenanthrene and pyrene metabolites with single- and multiple-phase II-conjugated groups. Sulphate conjugates were excreted to experiment water, and glucuronide and glucoside conjugates and metabolites with several hydroxylations and multiple conjugations were detected in worm tissue. The results demonstrate that earthworms are able to transform PAHs to water-soluble phase II metabolites, which can be excreted to the surrounding environment.
机译：多环芳烃（PAHs）是土壤污染物。由于PAHs具有很高的亲脂性，因此与土壤中的有机物有关。多环芳烃的转化产生极性代谢产物，并且与土壤中有机物的相互作用发生变化。极性PAH代谢物是持久的，高度水溶性的，并且可能从土壤中浸出。对负责生物体中PAHs转化为极性代谢物的理解非常重要。在这里，我们介绍了普通E Eisenia fetida对PAHs and和菲的转化的研究。研究表明，在水培培养条件下，大肠埃希菌能够将多环芳烃转化为共轭II期代谢产物。我们检测到具有单相和多相II共轭基团的菲和pyr代谢物。将硫酸盐结合物排泄到实验水中，并在蠕虫组织中检测到了具有几个羟基化和多个结合的葡糖醛酸苷和葡萄糖苷结合物和代谢物。结果表明，worm能够将PAHs转化为水溶性II期代谢产物，然后将其排泄到周围环境中。

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