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首页> 外文期刊>The Science of the Total Environment >The toxicity of potentially toxic elements (Cu, Fe, Mn, Zn and Ni) to the cnidarian Hydra attenuata at environmentally relevant concentrations
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The toxicity of potentially toxic elements (Cu, Fe, Mn, Zn and Ni) to the cnidarian Hydra attenuata at environmentally relevant concentrations

机译：潜在有毒元素（Cu，Fe，Mn，Zn和Ni）在环保浓度下患有急性毒性的毒性

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The domestic, agricultural, industrial, technological and medical applications of potentially toxic elements (PTEs) have led to global pollution in all environments. In this study, the cnidarian Hydra attenuata was exposed individually and to a mixture of 5 metals (copper, iron, manganese, zinc and nickel) at environmentally relevant concentrations (1x) within the Clyde estuary, Scotland and incremental concentrations ranging from 0.0001x to 1000x. Toxicity was investigated using morphology, attachment, hydranth number and feeding behaviour as endpoints. When exposed individually, Cu, Mn and Fe significantly reduced Hydra morphology, feeding and attachment at environmentally relevant concentrations. Hydra mortality was measured, having an LC50 of 0.045x (for the environmentally relevant mixture of metals) and Cu 0.5 mg/l, Fe 3 mg/l, Mn 2 mg/l, Zn 0.1 mg/l, Ni 0.5 mg/l for each element exposed individually. The PTE mixture incurred a significant decrease (p = 0.05) in morphology at 0.0001x, with 100% mortality at 0.1x (containing a concentration of Cu 0.05 mg/l, Fe 0.3 mg/l, Mn 0.2 mg/l, Zn 0.01 mg/l, Ni 0.05 mg/l) and a toxicity threshold (TT) of 0.000005x. Both copper and iron when exposed individually to the concentration of their respective metals found in the environment resulted in 100% mortality for all Hydra exposed. These results indicate that the PTE mixture (including the individual concentrations of copper, iron, manganese and nickel) could potentially prove significantly toxic to the aquatic environment. (c) 2019 Elsevier B.V. All rights reserved.
机译：潜在有毒元素（PTES）的国内，农业，工业，技术和医疗应用导致了所有环境中的全球污染。在这项研究中，CLARARARD HYDRA睾丸单独暴露，并在克莱德河口，苏格兰和增量浓度范围内的环境相关浓度（1x）在0.0001倍的增量浓度下将5金属（铜，铁，锰，锌和镍）的混合物暴露于0.0001倍。 1000x。使用形态学，附着，酸性数量和饲养行为作为终点来研究毒性。当单独暴露时，Cu，Mn和Fe显着降低了在环境相关浓度下的Hydra形态，进料和附着。测量氢化液体死亡率，LC50为0.045x（对于环保混合物的金属）和Cu 0.5mg / L，Fe 3 mg / L，Mn 2 mg / L，Zn 0.1mg / L，Ni 0.5 mg / L.对于单独暴露的每个元素。 PTE混合物在0.0001倍的形态下发生显着降低（p <= 0.05），在0.1x时具有100％的死亡率（含有Cu 0.05mg / L，Fe 0.3mg / L，Mn 0.2mg / L，Zn 0.01 mg / L，Ni 0.05 mg / L）和0.000005x的毒性阈值（TT）。铜和铁在环境中发现的各自金属的浓度单独暴露导致所有含水剂暴露的100％死亡率。这些结果表明，PTE混合物（包括单个铜，铁，锰和镍）可能会对水生环境显着毒性。 （c）2019 Elsevier B.v.保留所有权利。

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