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首页> 外文期刊>African Journal of Biotechnology >Trace metals in some benthic fishes of the Ikpoba river dam, Benin City, Nigeria
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Trace metals in some benthic fishes of the Ikpoba river dam, Benin City, Nigeria

机译：尼日利亚贝宁市伊波波河大坝底栖鱼类中的痕量金属

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The concentration of iron (Fe), copper (Cu), manganese (Mn), zinc (Zn), nickel (Ni), cadmuim (Cd), chromium (Cr) and lead (Pb) in two benthic fish species (Mormyrops deliciosus?and?Mormyrus macrophthalmus?netted from two locations (Okhoro and Low lift pump sites) on the Ikpoba River Dam, Benin City, Nigeria were determined using atomic absorption spectrometric technique. Sediment and water samples were also analysed for their trace metal concentrations. The range of trace metal concentrations (μg/g) in the fishes which is the focus of the study were as follows: Fe = 39.60 - 41.07 μg/g, Cu = 5.04 - 8.04 μg/g, Mn = 0.38 - 1.34 μg/g, Zn = 17.01 - 23.16μg/g, Ni = 0.24 - 0.48 μg/g, Cd = 0.79 - 0.98 μg/g, Cr = 0.38-0.91 μg/g, and Pb = 2.67-3.53 μg/g. Results show that relatively, higher metal levels were recorded in?M. deliciosus?than?M. macrophthalmus. No significant differences (P > 0.05) were recorded between the concentrations of Fe, Mn, Zn and Pb in the two fish species. Significant differences (P < 0.05) were however, recorded between the concentrations of Cu, Ni, Cd and Cr in the fishes. The levels of Pb in the fish species exceeded the limit recommended in fish and fishery products by the Food and Agricultural Organization (FAO) of the United Nations. Also, the levels of Fe and Cd in the water exceeded the levels recommended for portable drinking water by the World Health Organization (WHO).
机译：两种底栖鱼类（Mormyrops deliciosus）中铁（Fe），铜（Cu），锰（Mn），锌（Zn），镍（Ni），镉（Cd），铬（Cr）和铅（Pb）的浓度用原子吸收光谱法测定了尼日利亚贝宁市伊波巴河大坝两个地点（奥霍罗河和低扬程泵站）的大孔雀和大孔雀，并分析了沉积物和水样中的痕量金属浓度。研究的重点是鱼类中的痕量金属浓度（μg/ g）范围如下：Fe = 39.60-41.07μg/ g，Cu = 5.04-8.04μg/ g，Mn = 0.38-1.34μg/ g ，Zn = 17.01-23.16μg/ g，Ni = 0.24-0.48μg/ g，Cd = 0.79-0.98μg/ g，Cr = 0.38-0.91μg/ g，Pb = 2.67-3.53μg/ g。相对而言，纤细支原体中的金属含量高于大眼支原体中的金属含量，两种鱼类中铁，锰，锌和铅的含量之间没有显着差异（P> 0.05）。但是，鱼类中的铜，镍，镉和铬的浓度之间存在差异（P <0.05）。鱼种中的铅含量超过了联合国粮食及农业组织（粮农组织）所建议的鱼类和渔产品中的限量。而且，水中的Fe和Cd含量超过了世界卫生组织（WHO）建议的便携式饮用水含量。

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