Enriched Aerosol-to-Hydrosol Transfer for Rapid and Continuous Monitoring of Bioaerosols.
Nano Lett
; 21(2): 1017-1024, 2021 01 27.
Article
in English
| MEDLINE | ID: covidwho-1028800
ABSTRACT
Bioaerosols, including infectious diseases such as COVID-19, are a continuous threat to global public safety. Despite their importance, the development of a practical, real-time means of monitoring bioaerosols has remained elusive. Here, we present a novel, simple, and highly efficient means of obtaining enriched bioaerosol samples. Aerosols are collected into a thin and stable liquid film by the unique interaction of a superhydrophilic surface and a continuous two-phase centrifugal flow. We demonstrate that this method can provide a concentration enhancement ratio of â¼2.4 × 106 with a collection efficiency of â¼99.9% and an aerosol-into-liquid transfer rate of â¼95.9% at 500 nm particle size (smaller than a single bacterium). This transfer is effective in both laboratory and external ambient environments. The system has a low limit of detection of <50 CFU/m3air using a straightforward bioluminescence-based technique and shows significant potential for air monitoring in occupational and public-health applications.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Bacteria
/
Environmental Monitoring
/
Aerosols
Language:
English
Journal:
Nano Lett
Year:
2021
Document Type:
Article
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