纳米富勒烯在水生食物链传递过程中的迁移机制与毒性变化

项目名称： 纳米富勒烯在水生食物链传递过程中的迁移机制与毒性变化

项目编号： No.41272381

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 何义亮

作者单位： 上海交通大学

项目金额： 85万元

中文摘要： 富勒烯（C60）进入水体后会形成水稳晶体型纳米颗粒（nC60），其环境负效应越来越受到关注。本研究拟选择斜生栅藻作为生产者，大型溞作为初级消费者，异育银鲫幼鱼作为次级消费者，构成"水体－斜生栅藻－大型溞－异育银鲫"的水生食物链，研究揭示nC60在水生食物链中的吸收扩散过程、形态变化、迁移效率、累积自净规律及其毒性变化机制等。研究采用由个体到食物链的方式，内容主要包括nC60在次级消费者异育银鲫肠道的吸收过程及其形态变化、nC60在次级消费者异育银鲫体内的扩散与平衡过程、nC60在大型溞与异育银鲫间的迁移过程及迁移效率、nC60 在"水体－斜生栅藻－大型溞－异育银鲫"食物链中的迁移方程构建和nC60 在水生食物链的毒性迁移和变化机制等。研究成果不仅对于认识和揭示nC60在水生食物链中的迁移转化机制具有科学价值，而且可以为进一步提出和建立基于水产食品安全的水体nC60安全浓度阈值提供理论依据。

中文关键词： 纳米富勒烯（nC60）；纳米银；水生食物链；迁移机制；毒性变化

英文摘要： Fullerene (C60) forms stable aqueous nanocrystal fullerene (nC60) after being released into aqueous environment and its adverse effects in aqueous environment are getting more and more attention. In this study, Scenedesmus obliquus is selected as producer, Daphnia magna is selected as primary consumer, and Carassius auratus gibelio is selected as secondary consumer. Those three creatures form a food chain of "water - Scenedemus obliquus - Daphnia magna - Carassius auratus gibelio" in aqueous environment. Then the research of nC60 in this aqueous food chain will focus on the process of absorption and distribution, changes in status, transfer efficiency, the balance of accumulation and depuration, and changes in toxic mechanism. From the individual in food chain to the whole food chain creatures, the contents of this study will be carried out in five main aspects: 1. absorption and status changes of nC60 in the intestine of secondary consumer Carassius auratus; 2.distribution and balance of nC60 in body of secondary consumer Carassius auratus; 3. trophic transfer process and efficiency of nC60 from Daphnia magna to Carassius auratus; 4. establishment of transfer equation for nC60 in the food chain of "water - Scenedesmus obliquus - Daphnia magna - Carassius auratus gibelio"; 5. transfer and changes in toxicity of

英文关键词： Fullence (C60)；Silver nanoparticles；Aquesous food chain；Transfer mechanism；Toxicity changing