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首页> 外文期刊>Journal of applied biological chemistry >Exploration of Metallic Contamination in Fish Species of the Polluted Rivers in Bangladesh
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Exploration of Metallic Contamination in Fish Species of the Polluted Rivers in Bangladesh

机译：孟加拉国污染河流鱼类物种中的金属污染的探索

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摘要

An attempt was made to assess metal ionic toxicity levels of different fishes in the polluted rivers viz., Buriganga and Turag. Fish samples collected from two polluted rivers were analyzed for the levels of metals such as Cd, Cr, Cu, Mn, Pb, and Zn in order to elucidate the status of these contaminants in fish meant for human consumption. The detected concentrations of Cr, Cu, Mn, and Zn ions in fish species collected from the polluted rivers were below the toxic levels and did not appear to pose a threat. Among the analyzed metals, Cd and Pb ions were detected above the permissible levels in liver and muscle tissues of stinging catfish (Heteropneustesfossilis), spotted snakehead (Channapunctata) and wallago (Wallagoattu) collected from the polluted rivers causing toxicity for human consumption. Stinging catfish (Heteropneustesfossilis) was the species found to highly bioaccumulate these metals. Fish species bioconcentrated appreciable amounts of Cd and Pb as toxic metals in the liver as compared to the muscle. Levels of these toxic metals varied depending on different tissues in fish species.
机译：试图评估受污染的河流（布里甘加和图拉格）中不同鱼类的金属离子毒性水平。分析了从两条被污染的河流中收集的鱼类样品中的镉，铬，铜，锰，铅和锌等金属含量，以阐明人类食用鱼类中这些污染物的状况。从受污染的河流收集的鱼类中检测到的Cr，Cu，Mn和Zn离子浓度低于毒性水平，似乎没有构成威胁。在所分析的金属中，从受污染的河流中采集的st鱼（Heteropneustesfossilis），斑点蛇头（Channapunctata）和wallago（Wallagoattu）的肝脏和肌肉组织中检测到的镉和Pb离子含量超过允许的水平，对人类食用有毒性。 cat鱼（Heteropneustesfossilis）是发现这些金属高度生物富集的物种。与肌肉相比，鱼类在肝脏中生物富集了相当数量的Cd和Pb作为有毒金属。这些有毒金属的含量取决于鱼类中不同的组织。

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