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Bioaccumulation of heavy metals in fish species from the Meiliang Bay, Taihu Lake, China

机译:太湖梅梁湾鱼类中重金属的生物富集

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In the present study, the bioaccumulation of heavy metals (Cr, Cu, Cd, Pb) content were determined in freshwater edible fishes Cyprinus carpio Linnaeus and Pelteobagrus fluvidraco, which were caught from the Meiliang Bay, Taihu Lake, a large, shallow and eutrophic lake of China. The results showed that the Cr, Cu, Cd and Pb content in the edible parts of the two fish species were much lower than Chinese Food Health Criterion (1994). However, the results showed marked differences in the four analyzed metal content between the two species and different tissues as well as significant variations. Pb content were the highest in the liver of fishes, Cd contents were almost the same in all organs of fishes, Cr contents mainly enriched in the kidney and liver, Cu contents were the highest in gills, However, the total metal bioaccumulation were greatest in the liver, gills and the lowest in the muscle. Although the total accumulations were highest in P. fluvidraco compare then C.carpio. This investigation indicated that fish products in Meiliang Bay, Taihu Lake were still safe for human consumption, but the amount consumed should be controlled under the Chinese Food Health Criterion to avoid excessive intake of Pb. Further, this is the first report on seasonal distribution of heavy metals and proximate compositions of commercialized important edible fishes from Meiliang Bay, Taihu Lake, China.
机译:在本研究中,测定了太湖美良湾,浅水和富营养化的淡水食用鱼鲤鱼和Pe鱼中重金属(Cr,Cu,Cd,Pb)的生物富集。中国的湖泊。结果表明,两种鱼类可食部分的Cr,Cu,Cd和Pb含量远低于《中国食品卫生标准(1994)》。但是,结果显示两种物种和不同组织之间四种分析的金属含量存在显着差异,并且存在显着差异。鱼类肝脏中Pb含量最高,鱼类所有器官中Cd含量几乎相同,Cr含量主要分布在肾脏和肝脏中,g中Cu含量最高,但是在鱼类中总金属生物积累最大。肝脏,g和肌肉中最低的。尽管总的积累量最高,但与C.carpio相比。调查表明,太湖梅梁湾的鱼类产品仍可安全食用,但应根据《中国食品卫生标准》控制食用量,以免过量摄入铅。此外,这是来自中国太湖梅良湾的重金属的季节性分布和商业化重要食用鱼的近邻成分的第一份报告。

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