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首页> 外文期刊>International Journal of Environmental Research and Public Health >Effect of Nano-Al 2 O 3 on the Toxicity and Oxidative Stress of Copper towards Scenedesmus obliquus
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Effect of Nano-Al 2 O 3 on the Toxicity and Oxidative Stress of Copper towards Scenedesmus obliquus

机译：纳米Al 2 O 3对斜线藻铜毒性和氧化应激的影响。

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摘要

Nano-Al 2 O 3 has been widely used in various industries; unfortunately, it can be released into the aquatic environment. Although nano-Al 2 O 3 is believed to be of low toxicity, it can interact with other pollutants in water, such as heavy metals. However, the interactions between nano-Al 2 O 3 and heavy metals as well as the effect of nano-Al 2 O 3 on the toxicity of the metals have been rarely investigated. The current study investigated copper toxicity in the presence of nano-Al 2 O 3 towards Scenedesmus obliquus . Superoxide dismutase activity and concentration of glutathione and malondialdehyde in cells were determined in order to quantify oxidative stress in this study. Results showed that the presence of nano-Al 2 O 3 reduced the toxicity of Cu towards S. obliquus . The existence of nano-Al 2 O 3 decreased the growth inhibition of S. obliquus . The accumulation of copper and the level of oxidative stress in algae were reduced in the presence of nano-Al 2 O 3 . Furthermore, lower copper accumulation was the main factor that mitigated copper toxicity with the addition of nano-Al 2 O 3 . The decreased copper uptake could be attributed to the adsorption of copper onto nanoparticles and the subsequent decrease of available copper in water.
机译：纳米Al 2 O 3已广泛应用于各个行业。不幸的是，它可以释放到水生环境中。尽管人们认为纳米Al 2 O 3具有低毒性，但它可以与水中的其他污染物（例如重金属）相互作用。然而，很少研究纳米Al 2 O 3与重金属之间的相互作用以及纳米Al 2 O 3对金属毒性的影响。目前的研究是在存在纳米Al 2 O 3的情况下，研究斜铜藻对铜的毒性。测定超氧化物歧化酶活性以及细胞中谷胱甘肽和丙二醛的浓度，以量化本研究中的氧化应激。结果表明，纳米Al 2 O 3的存在降低了铜对斜纹酵母的毒性。纳米Al 2 O 3的存在降低了斜生链球菌的生长抑制。在纳米Al 2 O 3的存在下，藻类中铜的积累和氧化应激水平降低。此外，较低的铜积累是通过添加纳米Al 2 O 3减轻铜毒性的主要因素。铜吸收的减少可能归因于铜在纳米颗粒上的吸附以及随后水中有效铜的减少。

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