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首页> 外文期刊>Journal of Environmental & Analytical Toxicology >Levels of Heavy Metal in Some Selected Fish Species Inhabiting Ondo State Coastal Waters, Nigeria
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Levels of Heavy Metal in Some Selected Fish Species Inhabiting Ondo State Coastal Waters, Nigeria

机译：尼日利亚翁多州沿海水域某些选定鱼类的重金属含量

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The distribution and level of six heavy metals viz: Cr, Cd, Pd, Cu, Zn, and Ni in different organs gill, head, bone, muscle and eye of five fish species Arius latisculatus, Cynoglossus browni, Caranx lugubris, Sardinella aurita, Caranx senegallus, and associated water collected from the coastal waters of Ondo State, Southwestern Nigeria were investigated in this study. The concentrations of Zn (0.10-0.36 mg/kg), Cu (0.18-0.27 mg/kg), Ni (BDL-0.01 mg/kg) and Cr (0.04-0.63 mg/kg) found in the water samples were within the Maximum Permissible Level (MPL), while higher concentrations above the MPL were recorded for Cd (0.08-0.19 mg/kg) and Pb (0.34-0.79 mg/kg). Zn was the most abundant heavy metals found in all fish species organs investigated. Higher concentrations of the metals were recorded in the gills and eyes compared to other organs in most of the fish species. While the concentration of Zn (0.28 mg/ kg-4.14 mg/kg), Cu (BDL-5.72 mg/kg), Ni (BDL-0.01 mg/kg), and Cr (BDL-3.41) in the fish tissues were within the Maximum Allowable Level (MAL) for a food source, the findings of this study Cd (BDL-3.18 mg/kg) and Pd (BDL-1.14 mg/kg) showed values exceeding the maximum allowable level, thus constituting potential health hazard to consumers of these fish species. Transfer factors of most metals in fish from water were greater than or equal to 1 suggesting bioaccumulation of the metals by the fish from water column, while distribution of the heavy metals in the different fish parts were organ specific.
机译：六种重金属的分布和水平：Cr，Cd，Pd，Cu，Zn和Ni在五种鱼类Arius latisculatus，Cynoglossus browni，Caranx lugubris，Sardinella aurita，本研究调查了Caranx senegallus和从尼日利亚西南部Ondo州沿海水域收集的相关水。在水样中发现的锌（0.10-0.36 mg / kg），铜（0.18-0.27 mg / kg），镍（BDL-0.01 mg / kg）和铬（0.04-0.63 mg / kg）的浓度在最高允许水平（MPL），而Cd（0.08-0.19 mg / kg）和Pb（0.34-0.79 mg / kg）记录到高于MPL的较高浓度。锌是所有被调查鱼类物种中发现的最丰富的重金属。与大多数鱼类中的其他器官相比，腮和眼睛中的金属含量更高。鱼组织中的Zn（0.28 mg / kg-4.14 mg / kg），Cu（BDL-5.72 mg / kg），Ni（BDL-0.01 mg / kg）和Cr（BDL-3.41）的浓度均在对于食物来源的最大允许水平（MAL），本研究的Cd（BDL-3.18 mg / kg）和Pd（BDL-1.14 mg / kg）的结果表明，其值超过了最大允许水平，因此对这些鱼类的消费者。水中鱼中大多数金属的转移因子大于或等于1，表明水柱中鱼对金属的生物富集，而重金属在鱼不同部位的分布是器官特异性的。

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