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首页> 外文期刊>Environmental Science & Technology >Effect of Dispersion on Adsorption of Atrazine by Aqueous Suspensions of Fullerenes
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Effect of Dispersion on Adsorption of Atrazine by Aqueous Suspensions of Fullerenes

机译：分散液对富勒烯水悬浮液吸附At去津的影响

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摘要

With the widespread application of fullerenes, it is critical to assess their environmental behaviors and their impacts on the transport and bioavailability of organic contaminants. The effects of faUerene particle size, chemistry of the solution, and natural organic matter on the adsorption of atrazine by aqueous dispersions of fullerenes (C_(60)) were investigated in this work. The results showed that the Polanyi-Manes model could fit the adsorption isotherms well. Smaller sizes of fiillerene particles led to increased available sites and, consequently, enhanced the adsorption of atrazine on C_(60). However, intensely dispersed C_(60)systems might not possess suitably high adsorptive capacities due to surface chemistry change. Adsorption of atrazine by aqueous dispersions of C_(60) increased with a decrease in the pH of the solution. Introduction of humic acid significantly reduced the size of the C_(60) particles, and resulted in the increase of the adsorption amount. Fullerene materials, once released into the aquatic environment, are inclined to form aqueous suspensions with different degrees of dispersion, which would greatly affect the transport and fate of organic contaminants.
机译：随着富勒烯的广泛应用，评估它们的环境行为及其对有机污染物的运输和生物利用度的影响至关重要。在这项工作中，研究了富勒烯粒径，溶液化学性质和天然有机物对富勒烯（C_（60））水分散体吸附the去津的影响。结果表明，Polanyi-Manes模型可以很好地拟合吸附等温线。较小的萤石颗粒导致可用位点增加，因此增强了r去津在C_（60）上的吸附。但是，由于表面化学变化，高度分散的C_（60）系统可能不具有适当的高吸附能力。 C_（60）的水分散液对阿特拉津的吸附随着溶液pH值的降低而增加。腐殖酸的引入显着减小了C_（60）颗粒的尺寸，并导致了吸附量的增加。富勒烯材料一旦释放到水生环境中，就会形成具有不同分散度的水悬浮液，这将极大地影响有机污染物的运输和命运。

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  • 来源
    《Environmental Science & Technology》 |2011年第14期|p.5959-5965|共7页
  • 作者

    Ke Gai; Baoyou Shi; Xiaomin Yan; Dongsheng Wang;

  • 作者单位

    State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, People's Republic of China;

    State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, People's Republic of China;

    State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, People's Republic of China;

    State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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