Ecotoxicity and transport of nanoparticles released from commercial products

商业产品释放的纳米颗粒的生态毒性和运输

• 批准号: 463571-2014
• 负责人: OCarroll, Denis
• 金额: $ 14.07万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Strategic Projects - Group
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=577080
• 关键词: Ecotoxicity; transport; nanoparticles; released; commercial

Nanotechnology is met with both excitement and scepticism. On the one hand there are tremendous technological opportunities through the exploitation of the unique properties of nanoparticles. On the other hand, there is concern that nanoparticles will have adverse effects on human and ecological health when they are released to the environment. Unfortunately, the risks of engineered nanoparticles (ENPs) to soil and subsurface environments are as yet unknown, limited, in part, by a lack of basic scientific understanding of their release from commercial products, as well as their ecotoxicity and subsurface transport. Limited knowledge exists regarding ENP release from commercial products, as such released ENP characteristics and quantification of possible environmental concentrations is limited. Furthermore toxicity, fate, and transport work completed to date has been performed with pristine ENPs, as received from the supplier, without consideration of the true characteristics of ENPs released from commercial products. Finally ENP toxicity studies to date have typically focused on single organism testing systems whereas the interaction of ENPs with the biological components of ecosystems at the community level has not been captured. This proposed study will attempt to fill these knowledge gaps by determining potential environmental levels of selected ENPs, quantifying the transport of selected ENPs in porous media and evaluating the ecotoxicity and fate of selected ENPs in soil and wetland systems. The work proposed herein is urgently needed by policy makers to make informed decisions related to the use of nanotechnology and enable Canada to benefit from nanotechnology applications. This information will be used in a wide range of environmental nanotechnology fields. The project will support six summer students, six graduate students, and two postdoctoral fellows. This study will provide invaluable information for policy development surrounding nanotechnology both in Canada and throughout the world.

纳米技术既令人兴奋，又令人怀疑。一方面，通过利用纳米颗粒的独特性质，存在巨大的技术机会。另一方面，人们担心纳米颗粒在释放到环境中时会对人类和生态健康产生不利影响。不幸的是，工程纳米颗粒（ENPs）对土壤和地下环境的风险是未知的，部分原因是缺乏对它们从商业产品中释放的基本科学理解，以及它们的生态毒性和地下运输。关于商业产品中的ENP释放的知识有限，因为这种释放的ENP特性和可能的环境浓度的量化是有限的。此外，毒性、归宿和运输 到目前为止，已完成的工作是使用从供应商处收到的原始ENP进行的，而没有考虑从商业产品中释放的ENP的真实特性。最后，迄今为止，ENP毒性研究通常侧重于单一生物体测试系统，而ENP与生态系统生物组成部分在社区一级的相互作用尚未得到捕获。这项拟议的研究将试图填补这些知识空白，确定潜在的环境水平的选择ENPs，定量运输的选择ENPs在多孔介质和评估生态毒性和命运的选择ENPs在土壤和湿地系统。本文提出的工作是迫切需要的决策者作出知情的决定有关的纳米技术的使用，使加拿大受益于纳米技术的应用。这些信息将用于广泛的环境纳米技术领域。的 该项目将资助六名暑期学生，六名研究生和两名博士后研究员。这项研究将为加拿大和世界各地的纳米技术政策制定提供宝贵的信息。