Document Detail


Particle deposition in airways of chronic respiratory patients exposed to an urban aerosol.
MedLine Citation:
PMID:  23035859     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Urban atmospheres in modern cities carry characteristic mixtures of particulate pollution which are potentially aggravating for chronic respiratory patients (CRP). Although air quality surveys can be detailed, the obtained information is not always useful to evaluate human health effects. This paper presents a novel approach to estimate particle deposition rates in airways of CRP, based on real air pollution data. By combining computational fluid dynamics with physical-chemical characteristics of particulate pollution, deposition rates are estimated for particles of different toxicological relevance, i.e. minerals, iron oxides, sea salts, ammonium salts and carbonaceous particles. Also, it enables some qualitative evaluation of the spatial, temporal and patient specific effects on the particle dose upon exposure to the urban atmosphere. Results show how heavy traffic conditions increases the deposition of anthropogenic particles in the trachea and lungs of respiratory patients (here, +0.28 and +1.5 µg h-1, respectively). In addition, local and synoptic meteorological conditions were found to have a strong effect on the overall dose. However, the pathology and age of the patient was found to be more crucial, with highest deposition rates for toxic particles in adults with a mild anomaly, followed by mild asthmatic children and adults with severe respiratory dysfunctions (7, 5 and 3µg h-1, respectively).
Authors:
Benjamin Horemans; Cedric Van Holsbeke; Wim Vos; Larysa Darchuk; Velibor Novakovic; Angel Conesa Fontan; Jan De Backer; Rene Ernest Vangrieken; Wilfried De Backer; Karolien De Wael
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-4
Journal Detail:
Title:  Environmental science & technology     Volume:  -     ISSN:  1520-5851     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-5     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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