Abstract View
Development of Aerosol into Liquid Sampler for Collecting Nanoparticles by Combining Particle Size Magnifier and Wet Cyclone
SOICHIRO KATO, Yayoi Inomata, Takafumi Seto, Kanazawa University
Abstract Number: 293
Working Group: Instrumentation and Methods
Abstract
It is well known that exposure of ambient particles causes the adverse health effects. To analyze health impact of aerosol, in vitro studies have been conducted by submerging particle-liquid suspension against cell culture. Conventionally, such suspension has been prepared by extracting the particles collected on the filter surface into solvents by mechanical dispersion and sonication. However, it is difficult to quantify exact amount of particles in the liquid because a part of solid particles remain on the filter surface by van der Waals force. In this study, a high flow rate aerosol wet sampler, that can collect airborne particles directly into liquid, was developed by combining the Particle Size Magnifier (PSM) and wet cyclone. The water-based PSM was developed to enhance particle size by condensational growth of water vapor. The micron-sized droplets that contain aerosol particles can be collected by centrifugal force generated by a swirling flow in the cyclone. We have designed two types (cut-off diameter) of cyclones with flow rate of 80 L min-1. The collection efficiency of ambient particles from <0.1 to 10 µm is evaluated with changing operation parameters of the PSM and cyclone.