Document Detail


Particle concentration dynamics in the ventilation duct after an artificial release: For countering potential bioterrorist attack.
MedLine Citation:
PMID:  24447859     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Ventilation duct serves as a potential target for bioterrorist attack. Understanding the dynamics of aerosolized harmful agents in the ventilation ducts provides the fundamentals for effective control and management, e.g., risk assessment. In this work, new models for predicting the concentration dynamics in the ventilation duct after a particle resuspension (representing the case that harmful agents are dosed when the ventilation is off and subsequently being turned on) or puff injection (representing the case that harmful agents are dosed when the ventilation is running) event were derived based on the mass balance model. The models were validated by a series of wind tunnel experiments. Indoor airborne particle concentration models were derived by incorporating the proposed ventilation duct models for resuspension and injection cases. The effects of resuspension and injection in the duct on indoor airborne particle concentration were examined by two hypothetical cases of Bacillus anthracis dosage using the derived models. For the same amount of BW agent dosage in the ventilation duct, the resuspension type release prolongs the exposure of harmful agents whereas the injection type release produces a higher peak concentration.
Authors:
Siming You; Man Pun Wan
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-1-6
Journal Detail:
Title:  Journal of hazardous materials     Volume:  267C     ISSN:  1873-3336     ISO Abbreviation:  J. Hazard. Mater.     Publication Date:  2014 Jan 
Date Detail:
Created Date:  2014-1-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9422688     Medline TA:  J Hazard Mater     Country:  -    
Other Details:
Languages:  ENG     Pagination:  183-193     Citation Subset:  -    
Copyright Information:
Copyright © 2014 Elsevier B.V. All rights reserved.
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