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Aerosolization of fine particles increases due to microbial contamination of metalworking fluids.

Authors
Wang-HX; Reponen-T; Li-W; Martuzevicius-D; Grinshpun-SA; Willeke-K
Source
J Aerosol Sci 2005 Mar; 36(3):1-14
NIOSHTIC No.
20025978
Abstract
Aerosolization of microorganisms from metalworking fluids (MWFs) was studied using a laboratory-scale set-up simulating grinding operations. An optical particle counter (OPC), a condensation nucleus counter (CNC), an electrical low pressure impactor (ELPI), and a photometric aerosol mass monitor were used to measure the airborne particles and microorganisms aerosolized from MWFs. The tests were performed using a semi-synthetic MWF with and without bacterial contamination (Pseudomonas fluorescens). Microbial contamination of the MWF increased the number and mass concentrations of aerosolized particles by a factor of 2 (as measured by the OPC and the photometric aerosol mass monitor, respectively). At the same time, there was an up to 50-fold increase in the concentration of fine particles , as measured by the CNC. The data collected with the ELPI showed that the peak of the fine particle number concentration was at . The results indicate that MWF mist may contain high concentrations of microbial fragments, which may not be detected by traditional microbial analysis methods, such as cultivation or microscopic counting.
Keywords
Metalworking-fluids; Aerosols; Aerosol-particles; Microorganisms; Analytical-processes; Analytical-methods
Contact
Department of Environmental Health, University of Cincinnati, P.O. Box 670056, 3223 Eden Ave, Cincinnati, OH 45267
CODEN
JALSB7
Publication Date
20050301
Document Type
Journal Article
Email Address
Tiina.Reponen@uc.edu
Funding Amount
378870
Funding Type
Grant
Fiscal Year
2005
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-003888
Issue of Publication
3?
ISSN
0021-8502
Priority Area
Work Environment and Workforce: Mixed Exposures
Source Name
Journal of Aerosol Science
State
OH
Performing Organization
University of Cincinnati
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