Engineering Research Equipment Grant: Studies of Single Particles Using an Electrodynamic Balance

该奖项是为了支持购买设备， 电动平衡系统的相互作用的研究 分散的单个颗粒和气态环境。 特别是， 该装置将用于研究环境和模型气溶胶， 在分离和去除过程的实验模拟中， 气体流中的污染物。 电动平衡设备将 使研究人员能够表征光学性质，化学性质， 环境和模型气溶胶颗粒的组成和动力学。 这 该项目将涉及确定化学物种的分布 在单个气溶胶颗粒内，光散射的准确性 计算，折射率的单粒子，吸湿性 气溶胶粒子的动力学 蒸发 粒子平衡也将用于研究 有害污染物的热分解， 有机物和重金属附着在颗粒上，颗粒的表面积， 和有效性的数值模型，描述了消除 气体污染物颗粒。 导致该奖项的提案是响应NSF 87提交的- 68、工程研究设备赠款。 这项研究成果 研究预计将描述的基本机制， 可以防止潜在有害的污染物进入 大气层

This award is to provide support for purchase of equipment to construct an electrodynamic balance system for investigation of the interaction of dispersed single particles and a gaseous environment. In particular, the apparatus will be used in studies of ambient and model aerosols and in experimental simulations of processes that separate and remove contaminants from gas streams. The electrodynamic balance facility will enable researchers to characterize the optical properties, chemical composition, and kinetics of ambient and model aerosol particles. This project will involve determining the distribution of chemical species within individual aerosol particles, the accuracy of light scattering calculations, the index of refraction of single particles, hygroscopic properties of single particles, and the kinetics of aerosol particle evaporation. The particle balance also will be used to investigate the thermal decomposition of hazardous contaminants, the adsorption of organics and heavy metals onto particles, the surface area of particles, and the validity of numerical models that describe the removal of gaseous contaminants by particles. The proposal leading to this award was submitted in response to NSF 87- 68, Engineering Research Equipment Grants. The results of this research investigation are expected to describe the fundamental mechanisms by which potentially harmful contaminants may be prevented from entering the atmosphere.