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首页> 外文期刊>Turkish Journal of Fisheries & Aquatic Sciences >Toxicity of Silver Nanoparticles to Tropical Microalgae Scenedesmus acuminatus, Chaetoceros gracilis and Crustacean Daphnia lumholtzi
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Toxicity of Silver Nanoparticles to Tropical Microalgae Scenedesmus acuminatus, Chaetoceros gracilis and Crustacean Daphnia lumholtzi

机译：银纳米颗粒对热带微藻场景藻，Chaetoceros gracilis和甲壳类水蚤（Daphnia lumholtzi）的毒性。

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Silver nanoparticles (AgNPs) have been widely used to produce consumer goods that vary in type and application. Undoubtedly the increase of production and consumption of these silver-containing products has led to the entry of silver compounds into the aquatic system. In this study, we used tropical groups of aquatic organisms including the freshwater green algae Scenedesmus acuminatus, the marine diatom Chaetoceros gracilis and the microcrustacean Daphnia lumholtzi as model organisms to investigate the acute and chronic toxicity of AgNPs. The test organisms were exposed following specific and standardized protocols for each species/endpoints, with modifications when necessary. The endpoints recorded were growth inhibition, survival, growth of parent animals and number of live neonates produced. The EC50 values of AgNP for the growth inhibition of S. acuminatus and C. graciliswere 38.5 μg/L and 24.3 μg/L, respectively. The values of median lethal concentrations (24h- and 48 h-LC50) of AgNPs to D. lumholtzi were 69.3 and 57.6 μg/L. In the chronic exposure, tested animals were exposed to AgNP from 0.1 to 5 μg/L for 21 days. Chronic effects of AgNP on survival, growth and reproduction of the microcrustacean D. lumholtzi were observed in concentrations higher than 0.5 μg/L.
机译：银纳米颗粒（AgNPs）已被广泛用于生产类型和用途各异的消费品。无疑，这些含银产品的生产和消费量的增加已导致银化合物进入水生系统。在这项研究中，我们使用热带水生生物群，包括淡水绿藻Scenedesmus acuminatus，海洋硅藻Chaetoceros gracilis和微甲壳类水蚤Daphnia lumholtzi作为模型生物来研究AgNPs的急性和慢性毒性。对于每种物种/端点，按照特定的标准化协议暴露测试生物，并在必要时进行修改。记录的终点是生长抑制，存活率，亲本动物的生长以及生产的活新生儿的数量。 AgNP对尖锐梭状芽胞杆菌和纤毛梭状芽孢杆菌的生长抑制的EC50值分别为38.5μg/ L和24.3μg/ L。 AgNPs对D. lumholtzi的致死浓度中值（24h-和48h-LC50）分别为69.3和57.6μg/ L。在长期暴露中，将被测试的动物暴露于0.1至5μg/ L的AgNP中21天。当浓度高于0.5μg/ L时，观察到AgNP对微甲壳类D. lumholtzi的存活，生长和繁殖的慢性影响。

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