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Development of a personal bioaerosol sampler based on a conical cyclone with recirculating liquid film.

Authors
Tolchinsky-AD; Sigaev-VI; Sigaev-GI; Varfolomeev-AN; Zvyagina-EV; Brasel-T; Cheng-YS
Source
J Occup Environ Hyg 2010 Mar; 7(3):156-162
NIOSHTIC No.
20036291
Abstract
This article describes the development of a novel, high-performance personal aerosol sampler intended to monitor occupational air pollution, specifically, microbial constituents. This prototype sampler has a horizontally positioned conical cyclone with recirculating liquid film and an ejection supply of adsorptive liquid into the inlet nozzle. Airborne pollutants were collected in the adsorptive liquid, thus improving the survivability of microbiological aerosol samples. Experimental modules of different dimensions were first evaluated. Based on the test results, a prototype sampler was fabricated and tested. Evaluation of the collection efficiency of the prototype unit indicated a higher than 90% collection efficiency for particles > 1.0 microm. The 50% cutoff diameter was between 0.70-0.75 microm. For assessment of the sampling process effect on the collected microorganisms, Bacillus thuringiensis was tested at a concentration of about 1.0 x 10(6) cells per cm(3). The viability in the prototype sampler decreased to 78% after 60 min of operation. Erratum:
Keywords
Aerosol-particles; Aerosols; Aerosol-sampling; Airborne-particles; Air-contamination; Air-flow; Air-monitoring; Air-quality; Air-sampling; Air-sampling-techniques; Fibrous-dusts; Inhalation-studies; Microbial-test-systems; Microbiology; Microorganisms; Monitoring-systems; Particle-aerodynamics; Particle-counters; Particulate-dust; Particulate-sampling-methods; Personal-protective-equipment; Qualitative-analysis; Respirable-dust; Statistical-analysis; Statistical-quality-control; Author Keywords: bioaerosol; cyclone; personal sampler
Contact
Yung Sung Cheng, Lovelace Respiratory Research Institute, 2425 Ridgecrest Dr., SE, Albuquerque, NM 87108
CODEN
JOEHA2
Publication Date
20100301
Document Type
Journal Article
Email Address
ycheng@lrri.org
Funding Type
Grant
Fiscal Year
2010
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-008913
Issue of Publication
3
ISSN
1545-9624
Source Name
Journal of Occupational and Environmental Hygiene
State
NM
Performing Organization
Lovelace Biomedical & Environmental Research
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