首页> 外文期刊>Journal of Aquatic Sciences >MERCURY AND LEAD CONCENTRATIONS IN SIX CARTILAGINOUS FISH SPECIES FROM THE LAGOS LAGOON AND ITS COAST
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MERCURY AND LEAD CONCENTRATIONS IN SIX CARTILAGINOUS FISH SPECIES FROM THE LAGOS LAGOON AND ITS COAST

机译:拉各斯泻湖及其海岸的六种钙质鱼类中的汞和铅含量

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Mercury and lead concentrations in cartilaginous fishes from Lagos Lagoon and coastal waters of South-West Nigeria were investigated between May and August 2013. There are obvious discharges of toxic heavy metal substances into these waters and whichcan get to man by bioaccumulation and biomagnifications in fish consumed. Range of total length of 54 specimens collected by species were as follows : Brown ray (Raja miraletus), 12.1-43.4 cm (total weight 50.00-400.00 g); Sting ray {Dasyatis margarita),38.0-86.5 cm (total weight 85.00-876.00 g); Dog fish shark (Squalus megalops), 33.5-85.3 cm (total weight 100.0 -3200.0 g); Hammer head shark (Sphyrna couardi), 48.0 -59.5 cm (total weight 500.00-1000.00 g); White spotted guitar fish (Rhinobatos albomaculatus), 64.5- 64.8 cm (total weight 900.00-1000.00 g) and thornback guitar fish (Zanobatus scholeinii), 35.0 cm (total weight 291.00 g). Mercury and lead levels (mg/kg) respectively were: R. miraletus (0.04±0.001 and 0.17±0.01), S. couardi (0.002±0.001 and 0.37±0.46), S. megalops (0.004±0.001 and 0.6±0.43), D. margarita (0.01±0.001) Z. scholeinii (0.007±0.001) and R. albomaculatus (0.003±0.001 and 0.13±0.01). The study showed that these fishes from Lagos Lagoon and its coast have concentrations below the permissible FAO/WHO standards for toxic metals in consumable fish products.
机译:2013年5月至2013年8月,对拉各斯泻湖和尼日利亚西南沿海水域的软骨鱼中的汞和铅浓度进行了调查。有明显的有毒重金属物质排放到这些水体中,这些生物可通过所消耗鱼的生物蓄积和生物放大作用而达到人为的水平。 。按物种收集的54个标本的总长度范围如下:棕线(Raja miraletus),12.1-43.4厘米(总重量50.00-400.00克); ing鱼(Dasyatis margarita),38.0-86.5厘米(总重85.00-876.00克);狗鱼鲨(Squalus megalops),33.5-85.3厘米(总重量100.0 -3200.0克);锤头鲨(Sphyrna couardi),48.0 -59.5 cm(总重量500.00-1000.00 g);白色斑点吉他鱼(Rhinobatos albomaculatus),64.5-64.8 cm(总重量900.00-1000.00 g)和棘背吉他鱼(Zanobatus scholeinii),35.0 cm(总重量291.00 g)。汞和铅水平(mg / kg)分别为:千层金龟子(0.04±0.001和0.17±0.01),古拉氏(鱼(0.002±0.001和0.37±0.46),巨型沙门氏菌(0.004±0.001和0.6±0.43) ,玛格丽塔酒D.margarita(0.01±0.001)猪霍乱弧菌Z.scholinii(0.007±0.001)和白斑杜鹃R. albomaculatus(0.003±0.001和0.13±0.01)。研究表明,这些来自拉各斯泻湖及其海岸的鱼类的浓度低于粮农组织/世卫组织关于食用鱼产品中有毒金属的允许标准。

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