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首页> 外文期刊>American Journal of Chemistry >Bioaccumulation of Heavy Metals in Parts of the Silver Catfish (Chrysichthys nigrodigitatus) Harvested from Badagry Creek and Fish Ponds in Badagry, Lagos, Nigeria
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Bioaccumulation of Heavy Metals in Parts of the Silver Catfish (Chrysichthys nigrodigitatus) Harvested from Badagry Creek and Fish Ponds in Badagry, Lagos, Nigeria

机译：从Badagry Creek和Badagry，Lagos，Lagos，尼日利亚的Badagry Creek和Fish Ponds收获的储物鲶鱼（Chrysichthys Nigrigitatus）中的重金属生物累积

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In aquatic environment, heavy metals are produced from natural and anthropogenic sources and the degree of contamination in fish is dependent on the sampling site, pollution types as well as mode of feeding. The concentration of heavy metals such as nickel (Ni), zinc (Zn), iron (Fe) and cadmium (Cd) were analyzed in various parts (head, gills intestine, gill and tail) of the silver catfish, Chrysichthys nigrodigitatus which were collected from Badagry creek and different ponds namely Morogbo (MOP), Magbon (MAP), Churchgate (CGP) and Ajibade (AJP) ponds within Badagry axis. The concentration of the heavy metals was determined using atomic absorption spectrophotometer (AAS). The results showed the accumulation of the metal differently in various part of the fish. Heavy metals concentration in the fish sample was in this order: Zn > Fe > Ni > Cd. Zinc was abundant and had the highest level of mean concentration accumulated in the head and all parts of the fish samples from both the lagoon and the fish ponds with the highest value of 3.06 μg/g recorded in the intestine of the fish sample from Church Gate concrete pond. The high zinc value could be associated with the fact that this metal is naturally abundant in Nigerian soils and fish accumulate zinc from both the surrounding water, sediments and their diet but the concentrations are below recommended value of Food and Agriculture Organization (FAO) and Lagos State Environmental Protection Agency (LASEPA) for daily intake. Iron was the second most concentrated metal with a mean concentration ranging from 0.33 - 2.37 μg/g, and this may be attributed to the clay nature of Nigerian soils. Nickel concentration in the samples ranged from 0.14-2.98 μg/g which may due to the discharge of industrial effluents, domestic and agricultural activities around Badagry axis. Cadmium was not detected in samples from Morogbo fish ponds, but was detected in samples from the lagoon and the other three fish ponds, with values ranging from ND - 0.25 μg/g, and this was relatively below the recommended value of FAO and LASEPA in fish which is an indication that the C. nigrodigitatus from these sampling sites was safe for human consumption.
机译：在水生环境中，重金属是由天然和人为来源产生的，鱼类中的污染程度取决于取样部位，污染类型以及饲养方式。在银鲶鱼的各个部分（头部，鳃肠，鳃和尾部）中，分析了镍（Ni），锌（Zn），铁（Fe）和镉（CD）的重金属浓度，杨氏鲶鱼，Chrysichthys Nigrodigitatus从Badagry Creek和不同的池塘内收集，即摩洛哥（MOP），Magnes（地图），教室（CGP）和Ajibade（AJP）池塘内的Badagry Axis。使用原子吸收分光光度计（AAS）测定重金属的浓度。结果表明，在鱼的各个部分中的含量不同地积聚。鱼样品中的重金属浓度均按顺序：Zn> Fe> Ni> Cd。锌丰富，并且具有最高水平的平均浓度在头部和来自泻湖和鱼池的鱼样品中的所有部分，以及从教会门的鱼类样品的肠道中记录的最高值为3.06μg/ g混凝土池塘。高锌值可能与该金属在尼日利亚土壤中天然丰富的事实有关，并且鱼在周围水，沉积物及其饮食中积聚锌，但浓度低于食品和农业组织（粮农组织）和拉各斯的推荐价值国家环境保护局（LASEPA）用于每日摄入量。铁是第二个最浓缩的金属，平均浓度范围为0.33-2.37μg/ g，这可能归因于尼日利亚土壤的粘土性质。样品中的镍浓度范围为0.14-2.98μg/ g，这可能是由于工业污水的排放，围绕Badagry Axis周围的国内和农业活动。在Morogbo Fish Ponds的样品中未检测到镉，但在泻湖和其他三种鱼塘的样品中检测到，值范围从ND - 0.25μg/ g范围内，这相比，粮农组织和Lasepa的推荐值相对较低鱼类表明，这些抽样网站的C. nigrodigitatus是人类消费的安全性。

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