唧唧堂编辑二朵2013-12-17 3:04 AM

Ingested plastic transfers hazardous chemicals to fish and induces hepatic stress 吞食塑料将有毒化学物转移到到鱼儿体内并引发其肝脏紧张

Abstract Plastic debris litters aquatic habitats globally, the majority of which is microscopic (< 1 mm), and is ingested by a large range of species. Risks associated with such small fragments come from the material itself and from chemical pollutants that sorb to it from surrounding water. Hazards associated with the complex mixture of plastic and accumulated pollutants are largely unknown. Here, we show that fish, exposed to a mixture of polyethylene with chemical pollutants sorbed from the marine environment, bioaccumulate these chemical pollutants and suffer liver toxicity and pathology. Fish fed virgin polyethylene fragments also show signs of stress, although less severe than fish fed marine polyethylene fragments. We provide baseline information regarding the bioaccumulation of chemicals and associated health effects from plastic ingestion in fish and demonstrate that future assessments should consider the complex mixture of the plastic material and their associated chemical pollutants. 论文摘要 塑料碎片被丢弃在全球的水环境中,它们中大部分是微型的(< 1 毫米), 并且正在被大范围的物种吞食中。这些小碎片的风险来自材料本身也来自它从周围水中吸收的化学污染物。 与这些复杂的塑料混合物和积累的污染相关的危险性在很大程度上还未所知。在这篇文章研究了那些暴露在含有从海洋吸收的化学污染物的聚乙烯混合物的鱼类。 我们指出这些鱼类生物积累(bioaccumulate)了这些化学污染物并遭受着肝中毒和肝病的折磨。被喂食纯聚乙烯碎片的鱼儿也显示有紧张的迹象,但是紧张程度比喂食了海洋聚乙烯碎片的鱼儿要低。我们提供了有关化学物的生物积累和塑料吞食的健康影响的基本信息,另外,我们说明了将来的评估需要考虑塑料的复杂混合物以及它们吸收的化学污染。

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唧唧堂编辑二朵

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