Naneum Size Resolved Aerosol Sampler For Exposure Studies

用于暴露研究的 Naneum 粒径分辨气溶胶采样器

• 批准号: 700239
• 金额: $ 3.19万
• 依托单位: NANEUM LIMITED
• 依托单位国家: 英国
• 项目类别: GRD Proof of Market
• 财政年份: 2013
• 资助国家: 英国
• 起止时间: 2013 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=700239
• 关键词: Naneum; Size; Resolved; Aerosol; Sampler

This project aims to develop a compact size resolved electrostatic sampler to allow rapidcollection and analysis of airborne particulate matter. In particular this sampler will allowquasi online chemical analysis to be carried out on a single size segregated substrate. Thedevice will be portable and easy to use with minimal setup required. It will be of primarybenefit and interest in the fields of environmental monitoring, occupational hygiene,toxicological studies, process control, atmospheric and aerosol research. Most existingtechnologies in this area allow only for the collection of the total suspended particulate matteracross a broad size range. Size segregation of samples is of critical importance in manyapplications. For example the impact of toxic particles on human health is determined by thesize of particles as some sizes are more dangerous than others. Therefore when one is carryingout chemical analysis of a sample one needs to know a priori what the particle size was in theair. This is in general difficult, expensive and time consuming to determine post-sampling.There are a few size resolved samplers on the market currently however the proposed devicetakes a novel approach bringing a number of significant advantages over existingtechnologies. Current size resolved devices usually rely on inertial impaction stages which areineffective for sampling nanoparticles and require high flow rates both for efficient collectionand to achieve reasonable sampling times. High flow rates require a large pump and thereforea large instrument. In addition all the particle sizes are collected on separate substrates whichrequire significant time to analyse. The proposed device will by contrast utilise electrostatictechniques for more efficient deposition of nanoparticles at low flow rates. Particles will beordered by size along a single substrate allowing the device to be small and portable as well asallowing rapid analysis of collected samples.

本计画旨在发展一种小型解析静电采样器，以快速收集及分析空气中颗粒物。特别是这种采样器将允许准在线化学分析进行单一大小的隔离基板。该设备将是便携式和易于使用的最低限度的设置所需。它将在环境监测、职业卫生、毒理学研究、过程控制、大气和气溶胶研究等领域产生主要效益和利益。这一领域的大多数现有技术只允许收集广泛尺寸范围内的总悬浮颗粒物。样品的尺寸分离在许多应用中是至关重要的。例如，有毒颗粒物对人体健康的影响取决于颗粒物的大小，因为某些颗粒物的大小比其他颗粒物更危险.因此，当一个人进行化学分析的样品，一个需要知道先验的颗粒大小是在空气中.这通常是困难的，昂贵的和耗时的，以确定后采样。目前市场上有一些尺寸分辨的采样器，然而，所提出的设备采用了一种新的方法，带来了一些显着的优势，超过现有的技术。目前的尺寸分辨装置通常依赖于惯性碰撞阶段，这对于采样纳米颗粒是无效的，并且需要高流速以有效收集和实现合理的采样时间。高流速需要大型泵，因此需要大型仪器。此外，所有的颗粒尺寸都收集在单独的基板上，这需要大量的时间来分析.相比之下，所提出的设备将利用静电技术在低流速下更有效地沉积纳米颗粒。颗粒将被排序的大小沿着一个单一的基板，使该设备是小和便携式，以及允许快速分析收集的样品。