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首页> 外文期刊>Environmental Science & Technology >Uptake and Transfer of ~(13)C-Fullerenols from Scenedesmus obliquus to Daphnia magna in an Aquatic Environment
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Uptake and Transfer of ~(13)C-Fullerenols from Scenedesmus obliquus to Daphnia magna in an Aquatic Environment

机译：水生环境中斜生藻中〜（13）C-富勒烯醇的吸收和转移

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摘要

Fullerenol, a water-soluble polyhydroxylated fullerene nanomaterial, enters aquatic organisms and ecosystems through different ingestion exposures and may pose environmental risks. The study of their uptake routes and transfer in aquatic systems is scarce. Herein, we quantitatively investigated the aquatic uptake and transfer of C-13-fullerenols from Scenedesmus obliquus to Daphnia magna using C-13-skeletonlabeling techniques. The bioaccumulation and depuration of fullerenol in Daphnia magna increased with exposure doses and time, reaching steady state within 16 h in aqueous and feeding-affected aqueous routes. The capacity of Daphnia magna to ingest fullerenol via the aqueous route was much higher than that via the dietary route. From the aqueous to feeding-affected aqueous, the kinetic analysis demonstrated the bioaccumulation factors decreases, which revealed that algae suppressed Daphnia magna uptake of fullerenols. The aqueous route was the primary fullerenols ingestion pathway for Daphnia magna. Kinetic analysis of the accumulation and transfer in Daphnia magna via the dietary route indicated low transfer efficiency of fullerenol along the Scenedesmus obliquus-Daphnia magna food chain. Using stable isotope labeling techniques, these quantitative data revealed that carbon nanomaterials underwent complex aquatic accumulation and transfer from primary producers to secondary consumers and algae inhibited their transfer in food chains.
机译：富勒烯醇是一种水溶性的多羟基化富勒烯纳米材料，会通过不同的摄入途径进入水生生物和生态系统，并可能构成环境风险。缺乏对它们在水生系统中的吸收途径和转移的研究。在本文中，我们使用C-13骨架标记技术定量研究了C-13富勒烯醇从斜Scene鱼到大水蚤的水生生物吸收和转移。大型蚤中富勒烯醇的生物蓄积和纯净度随着暴露剂量和时间的增加而增加，在水和受饲料影响的水途径中，在16小时内达到稳态。大水蚤通过水途径摄取富勒烯醇的能力比通过饮食途径摄取富勒烯醇的能力高得多。从水溶液到受饲料影响的水溶液，动力学分析表明生物蓄积因子减少，这表明藻类抑制了蚤对大富勒烯醇的吸收。水性途径是大型蚤（Daphnia magna）的主要富勒烯醇摄取途径。通过饮食途径在水蚤中积累和转移的动力学分析表明，富勒烯醇沿斜Scene鱼-水蚤食物链的转移效率较低。使用稳定的同位素标记技术，这些定量数据表明，碳纳米材料经历了复杂的水生积累，并从初级生产者转移到次级消费者，藻类抑制了它们在食物链中的转移。

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  • 来源
    《Environmental Science & Technology》 |2018年第21期|12133-12141|共9页
  • 作者

    Wang Chenglong; Chang Xue-Ling; Shi Qiuyue; Zhang Xian;

  • 作者单位

    Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Environm & Hlth, Xiamen 361021, Peoples R China;

    Chinese Acad Sci, Inst High Energy Phys, Key Lab Biomed Effects Nanomat & Nanosafety, Beijing 100049, Peoples R 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);
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