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首页> 外文期刊>African Journal of Biotechnology >Heavy metals contamination of Chrysichthys nigrodigitatus and Lates niloticus in Ikere Gorge, Oyo state, Nigeria
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Heavy metals contamination of Chrysichthys nigrodigitatus and Lates niloticus in Ikere Gorge, Oyo state, Nigeria

机译：尼日利亚奥约州伊凯尔峡谷的Chrysichthys nigrodigitatus和Lates niloticus重金属污染

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This study investigates the presence of heavy metal contamination of?Chrysichthys nigrodigitatus?and?Lates niloticus.?Adult?C. nigrodigitatus?and?L. niloticus?were obtained from fishermen in Ikere Gorge, Oyo state, Nigeria. Water samples were also collected during the wet and dry seasons of the year in the same locality. The presence of five metals were analyzed in both fish and water. Iron, copper, zinc, lead and manganese were investigated by atomic absorption spectrosocopy (AAS) in two separate experiments. In each case, four tissues; gills, bone, intestine and muscle were compared with the level of metals in the water. Lower concentrations of metals were recorded in water than in fish. Lower concentration of the metals found in fish and water was less than that recommended by the World Health Organisation (WHO) guideline for maximum concentration recorded in the tissue of the two samples. Iron was found to be dominant in the intestine of?C. nigrodigitatus, while manganese was found to be highest in the bone of?L. niloticus, copper recorded the least of all the metals. There is significant difference (P < 0.05) in heavy metals concentration in the gill of?C. niloticus?and water, as well as the concentration in the intestine of?L. niloticus?and water. It was concluded that though the heavy metals of interest were present in measurable quantities, they were still within safe limits for consumption.
机译：本研究调查了Chrysichthys nigrodigitatus和Lates niloticus的重金属污染。 nigrodigitatus和L。 niloticus？是从尼日利亚奥约州伊凯尔峡谷的渔民那里获得的。在一年中的潮湿和干燥季节，在同一地区也收集了水样。分析了鱼类和水中五种金属的存在。铁，铜，锌，铅和锰在两个独立的实验中通过原子吸收光谱法（AAS）进行了研究。在每种情况下，有四个纸巾。将ill，骨，肠和肌肉与水中的金属含量进行比较。水中记录的金属浓度低于鱼类。鱼类和水中发现的金属的较低浓度低于世界卫生组织（WHO）指南中建议的两个样品组织中记录的最大浓度。发现铁在？C肠中占主导地位。 Nigrodigitatus，而锰在骨骼中的含量最高。尼罗罗非鱼，铜是所有金属中最少的。 C的重金属浓度存在显着差异（P <0.05）。尼罗罗非鱼和水，以及小肠内的浓度。罗非鱼和水。结论是，尽管所关注的重金属以可测量的量存在，但仍处于安全的消费限制之内。

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