M Pan1, A Eiguren-Fernandez2, H Hsieh3, N Afshar-Mohajer1,4, S V Hering2, J Lednicky5, Z Hugh Fan6, C-Y Wu1. 1. Department of Environmental Engineering Sciences, Engineering School of Sustainable Infrastructure and Environment, University of Florida, Gainesville, FL, USA. 2. Aerosol Dynamics Inc., Berkeley, CA, USA. 3. Department of Microbiology and Cell Science, University of Florida, Gainesville, FL, USA. 4. Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA. 5. Department of Environmental and Global Health, and Emerging Pathogens Institute, University of Florida, Gainesville, FL, USA. 6. Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, USA.
Abstract
AIMS: State-of-the-art bioaerosol samplers have poor collection efficiencies for ultrafine virus aerosols. This work evaluated the performance of a novel growth tube collector (GTC), which utilizes laminar-flow water-based condensation to facilitate particle growth, for the collection of airborne MS2 viruses. METHODS AND RESULTS: Fine aerosols (<500 nm) containing MS2 coliphage were generated from a Collison nebulizer, conditioned by a dilution dryer and collected by a GTC and a BioSampler. The GTC effectively condensed water vapour onto the virus particles, creating droplets 2-5 μm in diameter, which facilitated collection. Comparison of particle counts upstream and downstream revealed that the GTC collected >93% of the inlet virus particles, whereas the BioSampler's efficiency was about 10%. Viable counts of the GTC-collected viruses were also one order of magnitude higher than those of the BioSampler (P = 0·003). CONCLUSION: The efficiency of the GTC for the viable collection of MS2 viruses exceeds that of industry standard instrument, the BioSampler, by a factor of 10-100. SIGNIFICANCE AND IMPACT OF THE STUDY: This study reveals that the GTC is an effective collector of viable MS2 aerosols, and concludes the instrument will be an effective tool for studying viable virus aerosols and the inhalation risks posed by airborne viruses.
AIMS: State-of-the-art bioaerosol samplers have poor collection efficiencies for ultrafine virus aerosols. This work evaluated the performance of a novel growth tube collector (GTC), which utilizes laminar-flow water-based condensation to facilitate particle growth, for the collection of airborne MS2 viruses. METHODS AND RESULTS: Fine aerosols (<500 nm) containing MS2 coliphage were generated from a Collison nebulizer, conditioned by a dilution dryer and collected by a GTC and a BioSampler. The GTC effectively condensed water vapour onto the virus particles, creating droplets 2-5 μm in diameter, which facilitated collection. Comparison of particle counts upstream and downstream revealed that the GTC collected >93% of the inlet virus particles, whereas the BioSampler's efficiency was about 10%. Viable counts of the GTC-collected viruses were also one order of magnitude higher than those of the BioSampler (P = 0·003). CONCLUSION: The efficiency of the GTC for the viable collection of MS2 viruses exceeds that of industry standard instrument, the BioSampler, by a factor of 10-100. SIGNIFICANCE AND IMPACT OF THE STUDY: This study reveals that the GTC is an effective collector of viable MS2 aerosols, and concludes the instrument will be an effective tool for studying viable virus aerosols and the inhalation risks posed by airborne viruses.
Authors: Trevor B Tilly; Ryan X Ward; Jiva K Luthra; Sarah Robinson; Arantzazu Eiguren-Fernandez; Gregory S Lewis; Richard L Salisbury; John A Lednicky; Tara L Sabo-Attwood; Saber M Hussain; Chang-Yu Wu Journal: Aerosol Sci Technol Date: 2019-09-16 Impact factor: 2.908
Authors: Ryan X Ward; Trevor B Tilly; Syeda Irsa Mazhar; Sarah E Robinson; Arantzazu Eiguren-Fernandez; Jun Wang; Tara Sabo-Attwood; Chang-Yu Wu Journal: J Hazard Mater Date: 2020-04-13 Impact factor: 10.588
Authors: Xiao Jiang; Julia C Loeb; Maohua Pan; Trevor B Tilly; Arantza Eiguren-Fernandez; John A Lednicky; Chang-Yu Wu; Z Hugh Fan Journal: Anal Chim Acta Date: 2021-04-23 Impact factor: 6.911
Authors: Tania S Bonny; Maohua Pan; Julia C Loeb; Xiao Jiang; Arantzazu Eiguren-Fernandez; Susanne Hering; Z Hugh Fan; Chang-Yu Wu; John A Lednicky Journal: Genome Announc Date: 2017-04-13