活動報告
Overseas Field Training：Assembly of a particle collection system with high mobility to understand atmospheric particles in Malaysia
 |
Masao Gen
Graduate School of Bio-Applications and Systems Engineering
Destination and period: Serdang UPM, Malaysia, Jun. 25-Aug. 3, 2012
I visited Universiti Putra Malaysia (UPM) in Malaysia for 39 days. The purpose of this field training was to assemble a particle collection
system and collect particle suspended in the gas phase. For comparison, a commercialized instrument for particle collection was also
used.
The assembled collectors (totally 3 collectors) were placed in UPM campus for long-term experiments (more than 30 days) and
near highway for short-term experiments (1 days). The commercialized one using a fiber filter was run for totally 6 days. The surface of
the filter changed from white to black in color after 1 day of particle collection. This implies that a lot of particles were accumulated on the
filter. In the experiments of the assembled sampler, particles suspended were deposited on plate-type metal substrate, being confirmed
by a scanning electron microscope, but it cannot be recognized by naked eyes. It suggests that particles with lower concentration were
deposited. This collector was able to be made without high expense and elaborate assembly. Therefore it can be placed in anyplace
because it is affordable for us. Under condition that stuffs for the experiments were limited, the experiments were carried out. This
implementation was owed to many people who helped me with my activities. Through this training, I learned how to apply skills and
knowledge that I learned for practical use under limited conditions. I strongly felt how important communication skill is to involve people surrounding me to do work as well.
Key words: Aerosol, Particle collection, Passive sampler