Research

PAPER: Charge of particles (PM2.5) collected in filter, 捕集された大気粒子の帯電状態

Other “intro” of papers from our lab >> /tag/paper/AJAE-cover


Preliminary study on the measurement of the electrostatic charging state of PM2.5 collected on filter media, 
実環境中のPM2.5(粒子状物質)をフィルター状で捕集したあとに帯電状態を調べた。「帯電」は、PMによる健康への影響を理解するために重要な情報。捕集されたPM2.5は75~87%が負に帯電されたことがわかった。

共同研究の成果 Collaborated between:
* Keio Univ: Okuda (Prof.), and graduate students (Yoshida, Gunji, Okahisa) and
* Tokyo Univ. of Agr. & Tech.: Kusdianto (Doctoral-student), Gen (Doctoral-student), Sato (Master-student), Lenggoro (Prof.)

keio-collected-tuat-measured
Schematic of experiments

Asian Journal of Atmospheric Environment (2015) 9(2):105-113 … more…

http://dx.doi.org/10.5572/ajae.2015.9.2.105
or download directly: Full paper in PDF

HIGHLIGHTS:
* Charging state is important to understand the process of adverse health effects of PM
(健康影響を調べるために微粒子の帯電状態を知ることは重要)
* The filters were not significantly charged by friction with air in the absence of PM
* Charge addition to or leakage from the filters was not observed over 2-month storage
* PM2.5 collected on the filters were likely to carry a negative charge
(捕集された微粒子の帯電状態は主にマイナス帯電)

Atmospheric aerosol: PM2.5 (particles suspended in the air) samples were collected in Keio Yokohama campus.

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