Analysis of Nano-plastics in Drinking water

饮用水中纳米塑料的分析

• 批准号: RTI-2020-00241
• 负责人: Andrews, Robert
• 金额: $ 4.49万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=691110
• 关键词: Analysis; Nano; plastics; Drinking; water

Research conducted at the University of Toronto has demonstrated the ubiquitous nature of microplastics in drinking water; many of these particles are <45 µm and unable to be characterized by currently available equipment. The requested pyrolyzer will allow for chemical characterization of microplastics <10 µm, as well as nanoplastics (<1 µm) which are of particular concern due to their ability to translocate across the gut and accumulate in the blood stream and vital organs. This equipment will be used to examine the removal and fate of micro- and nanoplastics through municipal drinking waster treatment processes and be directly associated with training 6-10 HQP annually.******Microplastics have been observed in environmental samples and treated drinking water around the world. The majority of these plastics are small (<125 µm) and it suggested that an even greater number of “nano”- sized (<1um) particles may be present in treated drinking water. In addition to the aforementioned health risks associated with nanoplastic consumption, it is anticipated that these particles will also serve as vectors for transport of sorbed micropollutants due to their chemical properties and high surface area to mass ratio. The proposed research will focus on determining the concentration and characterization of nanoplastics in environmental samples and treated drinking water, as well as determining the efficiency of various conventional and advanced treatment processes for the removal of nanoplastics. Results of this research will be of great interest to water providers, as well as provincial and federal regulators who aim to minimize the risk that treated drinking water poses to consumers. In addition to characterizing nanoplastics, work will be conducted to apply “big data” or artificial intelligence methods to better analyze data, such that complex mixtures of compounds may be examined simultaneously. ******In order for water treatment system to be more completely studied, the requested pyrolyzer must be acquired such that the researchers can accurately characterize nano-sized plastic particles, allowing potential risk associated with their consumption to be better understood. **

多伦多大学进行的研究表明，饮用水中微塑料无处不在；其中许多颗粒<45 µm，无法通过当前可用的设备进行表征。所需的热解器将允许对<10微米的微塑料以及<1微米的纳米塑料进行化学表征，这些塑料由于能够穿过肠道易位并在血流和重要器官中积累而受到特别关注。该设备将用于检查城市饮用水废物处理过程中微塑料和纳米塑料的去除和归宿，并直接与每年 6-10 个 HQP 的培训相关。****** 在世界各地的环境样本和处理过的饮用水中都观察到了微塑料。这些塑料大多数都很小（<125微米），这表明经过处理的饮用水中可能存在更多数量的“纳米”尺寸（<1微米）颗粒。除了上述与纳米塑料消耗相关的健康风险外，预计这些颗粒由于其化学性质和高表面积质量比也将充当吸附微污染物运输的载体。拟议的研究将重点确定环境样品和处理后的饮用水中纳米塑料的浓度和特征，以及确定各种常规和先进处理工艺去除纳米塑料的效率。这项研究的结果将引起供水商以及省级和联邦监管机构的极大兴趣，他们的目标是尽量减少经过处理的饮用水对消费者造成的风险。除了表征纳米塑料外，还将开展应用“大数据”或人工智能方法来更好地分析数据的工作，以便可以同时检查化合物的复杂混合物。 ******为了更全面地研究水处理系统，必须购买所需的热解器，以便研究人员能够准确地表征纳米尺寸的塑料颗粒，从而更好地了解与其消耗相关的潜在风险。 **