Journal article
The mapping of fine and ultrafine particle concentrations in an engine machining and assembly facility
The Annals of occupational hygiene, Vol.50(3), pp.249-257
04/2006
DOI: 10.1093/annhyg/mei061
PMID: 16361396
Abstract
Aerosol mapping was used to assess particle number and mass concentration in an engine machining and assembly facility in the winter and spring. Number and mass concentration maps were constructed from data collected with two mobile sampling carts, each equipped with a condensation particle counter (10 nm < diameter < 1 microm) and an optical particle counter (300 nm < diameter < 20 microm). Number concentrations inside the facility ranged from 15 to 150 times greater than that outside the facility and were highly dependent on season. The greatest number concentration (>1,000,000 particles cm(-3)) occurred in winter in an area where mass concentration was low (<0.10 mg m(-3)). The increased number of particles was attributed to the exhaust of direct-fire, natural-gas burners used to heat the supply air. The greatest mass concentrations were found around metalworking operations that were poorly enclosed. The larger particles that dominated particle mass in this area were accompanied by ultrafine particles, probably generated through evaporation and subsequent condensation of metalworking fluid components. Repeat mapping events demonstrated that these ultrafine particles persist in workplace air over long time periods.
Details
- Title: Subtitle
- The mapping of fine and ultrafine particle concentrations in an engine machining and assembly facility
- Creators
- Thomas M Peters - Department of Occupational and Environmental Health, University of Iowa, Iowa City, 52242-5000, USA. thomas-m-peters@uiowa.eduWilliam A HeitbrinkDouglas E EvansThomas J SlavinAndrew D Maynard
- Resource Type
- Journal article
- Publication Details
- The Annals of occupational hygiene, Vol.50(3), pp.249-257
- Publisher
- England
- DOI
- 10.1093/annhyg/mei061
- PMID
- 16361396
- ISSN
- 0003-4878
- eISSN
- 1475-3162
- Language
- English
- Date published
- 04/2006
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Occupational and Environmental Health
- Record Identifier
- 9983997341102771
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