Development of a novel method for trace analysis of nanomaterials in water

开发水中纳米材料痕量分析的新方法

• 批准号: 325-2013
• 负责人: Lai, Edward
• 金额: $ 2.48万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=543862
• 关键词: Development; novel; method; trace; analysis

The proposed research aims to develop a new method that is ideal for trace analysis of nanomaterials in municipal water from the dumping of waste containing nanomaterials. Although all nanomaterials have enormous prospect in industrial, consumer and medical applications, disposal of these products opens up a wide range of human exposure that needs to be well controlled. A method of high analytical sensitivity will help ameliorate the challenge of providing Canadian households with safe water for drinking, cooking, bathing and gardening in the short term. Our novel approach is based on the controlled coating of nanomaterials with a thick layer of polymer to grow larger, albeit at different rates. These grown nanomaterials can be separated by capillary electrophoresis due to differences in electrophoretic mobility, depending on their electronic charge, size, shape and surface functionality. Detection sensitivity is increased by the UV absorptivity of a thick polymer coating and can be further enhanced by adsorbing a compound of high quantum yield for laser-induced fluorescence detection.

拟议的研究旨在开发一种新的方法，该方法适用于从倾倒含有纳米材料的废物中痕量分析城市水中的纳米材料。虽然所有纳米材料在工业、消费和医疗应用方面都有巨大的前景，但这些产品的处置会使人类接触到大量纳米材料，需要加以很好的控制。一种高分析灵敏度的方法将有助于在短期内缓解为加拿大家庭提供安全饮用水、烹饪、洗澡和园艺的挑战。我们的新方法是基于用厚聚合物层控制纳米材料的涂层，使其生长得更大，尽管速率不同。由于电泳迁移率的差异，这些生长的纳米材料可以通过毛细管电泳分离，这取决于它们的电荷，尺寸，形状和表面功能。检测灵敏度通过厚聚合物涂层的UV吸收率增加，并且可以通过吸附用于激光诱导荧光检测的高量子产率的化合物来进一步增强。