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Jang, Jaesung
Sensors & Aerosols Lab.
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Gentle Sampling of Submicrometer Airborne Virus Particles using a Personal Electrostatic Particle Concentrator

Author(s)
Hong, SeongkyeolBhardwaj, JyotiHan, Chang-HoJang, Jaesung
Issued Date
2016-11
DOI
10.1021/acs.est.6b03464
URI
https://scholarworks.unist.ac.kr/handle/201301/20722
Fulltext
http://pubs.acs.org/doi/full/10.1021/acs.est.6b03464
Citation
ENVIRONMENTAL SCIENCE & TECHNOLOGY, v.50, no.22, pp.12365 - 12372
Abstract
Measurements of airborne viruses via sampling have been critical issues. Most electrostatic samplers have been assessed for bacterial aerosols or micrometer-sized viral particles; however, sampling of submicrometer-sized airborne viruses is necessary, especially because of the high probability of their staying airborne and their deposition in the lower respiratory tract. Here, we present a novel personal electrostatic particle concentrator (EPC) for gentle sampling of submicrometer airborne virus particles. Owing to the enhanced electric field designed in this EPC, the collection efficiencies reached values as high as 99.3-99.8% for 0.05-2 mu m diameter polystyrene particles at a flow rate of 1.2 L/min. Submicrometer-sized MS2 and T3 virus, particles were also collected in the EPC, and the concentrations relative to their respective initial suspensions were more than 10 times higher than those in the SKC BioSampler. Moreover, the recovery rate of T3 was 982 times higher in the EPC (-2 kV) than in the BioSampler at 12.5 L/min because of the gentle sampling of the EPC. Gentle sampling is desirable because many bioaerosols suffer from significant viability losses during sampling. The influence of ozone generated, applied electrostatic field, and the flow rate on the viability of the viruses will also be discussed.
Publisher
AMER CHEMICAL SOC
ISSN
0013-936X
Keyword
EFFICIENT COLLECTIONAEROSOL COLLECTIONINFLUENZA-VIRUSVIRAL AEROSOLSPRECIPITATORSIZEINACTIVATIONPERFORMANCESAMPLERSBACTERIA

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