Development of Efficient Airborne Samplers for Insoluble Particles - Comparison of Airborne and Ground-based Sampling

为了准备大气化学实验中不溶性颗粒的空气采样，本项目旨在开发具有最高效率的不溶性颗粒收集器，用于直径范围为0.1 - 2.62微米的颗粒和大于5微米的颗粒。为了克服大气颗粒浓度相对较低的事实，并尽量减少飞行时间，将颗粒收集在直径90毫米的大型核孔过滤器上。该系统及其在飞机上的位置和方向将以这样一种方式设计，以尽量减少进气中的颗粒损失。这将比较在固定的高海拔平台上收集的空气中颗粒回收的代表程度。

In preparation for airborne sampling of insoluble particles in atmospheric chemistry field experiments this project in designed to develop insoluble particle collectors with the highest possible efficiency for particles in the diameter range 0.1 - 2.62 micrometer and for particles larger than 5 micrometer. To overcome the fact that atmospheric particle concentrations are relatively low and to minimize flight time, particles will be collected on large 90 mm diameter Nuclepore filters. The system and its placement and orientation on the aircraft will be designed in such a way as to minimize loss of particles in the intake. This will compare the extent to which airborne particle recovery is representative of particles collected on stationary, high elevation platforms.