| Autor: |
Yanna Li, Wei Pang, Chen Sun, Qiang Zhou, Zuzeng Lin, Ye Chang, Quanning Li, Menglun Zhang, Xuexin Duan |
| Jazyk: |
angličtina |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
IEEE Access, Vol 7, Pp 101117-101124 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
2169-3536 |
| DOI: |
10.1109/ACCESS.2019.2930776 |
| Popis: |
The health effects of suspended particulate matter (PM) in the air are well documented; however, there is a lack of convenient tools to recognize and quantify PM onsite. Here, we design and fabricate a portable PM analysis system to realize onsite aerosol particle analysis. The system contains a micromachined virtual impactor (VI), a thermophoretic deposition chip, and a smartphone-based portable imaging device. The silicon dioxide (SiO2) particles and polystyrene sphere (PLS) particles are used to verify the micro-sized VI with an accurate cut-off diameter of $2~\mu \text{m}$ (PM2). After separation, the fine particles are thermally deposited on a replaceable film. Then, a smartphone connected with a hand-held optical microscope is applied to directly image and analyze the deposited particles with the assistance of a self-developed Android application; thus, the size and distribution of the particles can be acquired immediately. The PM analysis device is successfully applied to analyze the particle content from a smoking cigarette as a real complex sample demonstration. Considering the compact integration of the particle separation, collection, detection, and analysis components, the reported PM analysis device is promising for point-of-need outdoor and indoor air quality monitoring. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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